Making an thermostate

Hello,
We have just started with labview at school, we just had an 1,5 day course. We have to make an assignment for this course. We decided to make a thermostate to control the temperature in a room.
It must have the following functionality:
Every day of the week has it's own settings. a starttime, an endtime and a temperature. We want to save the settings and according to the system time the program must select the settings of the day of the week.
For example: On monday the program is set to 21 degrees. The heating must go on at 9:00 am and go off at 10:00 pm
We are just struggeling with labview. Can someone give us some examples or code that we can use in this program?? We are really stuck!

Hello,
We have just started with labview at school, we just had an 1,5 day course. We have to make an assignment for this course. We decided to make a thermostate to control the temperature in a room.
It must have the following functionality:
Every day of the week has it's own settings. a starttime, an endtime and a temperature. We want to save the settings and according to the system time the program must select the settings of the day of the week.
For example: On monday the program is set to 21 degrees. The heating must go on at 9:00 am and go off at 10:00 pm
Our main problem is that we can't program the timing so that de heating will automatically start at 9:00 am and go off at 12:00 pm and then on again at 7:00 pm and off at 10:00 pm.
We are just struggeling with labview. Can someone give us some examples or code that we can use in this program?? We are really stuck!

Similar Messages

Unable to set thermostate schedule with home control

Is anyone else having problems setting their thermostate schedule? I get an error message that the system was unavailable. I am getting really frustrated that I can't rely on this system. I have invested alot of money in everything, and it doesn't seem to be a very stable platform. Can anyone help me out?

I had the same problem for 3 days in a row. Each day I re-programmed the thermostat at the start of the cold weather. The next day I would check and it was back to the original settings. On the 4th day the settings finally took.
I called Verizon (as I have done about 50 times) and they had no solution other than to tell me they were doing some updates to the site and that might take care of it. My Energy Reader still doesn't give accurate readings about 1/2 the days. It seems to get signals mixed with the Appliance Switches I have. I've called Verizon on that as well and got the same reply so apparently it is their scripted answer. I also get the "server is currently busy, try again later" message frequently. Other than that things are working well.
I have talked to the Manager and Developers and they are supposed to be getting back to me with solutions but it is going on 2 months and the problems still exist (except for the Thermostat which worked because of my persistence).
This would be a nice system if they would resolve the bugs in it. I tried MiCasaVerde for a month and their system worked flawlessly but I couldn't use the cameras I bought from Verizon due to their coding them to prevent that. The manufacturer of the cameras said they should work unless the company changes the code in them which apparently Verizon does. Other than that I would have stayed with MiCasaVerde but decided to work with Verizon and hopefully get the thing working right.
They seem to spend more time on making the system proprietary than resolving customer issues. I've had the system for over 8 months now and have seen little improvement. My patience is running out. I won't even expound on new services that were supposed to be added and never have been.

Making an iTunes library protected against ripping onto CD, listen only

Hi there
we have a security issue with itunes. We are a secure college within an HMP&YOI and we use 16 imacs in two rooms. We have installed the same master music library (currently 8500 tunes)on each machine and all students have access to it under their own account.
Our problem is this. 1 (How) is it possible to make a library read only, i.e. so it is not burnable onto a CD, for copyright protection. We want the lads to be able to hear the music without being able to 'rip' it to CD.
2. Is it possible to split the library into two libraries, making the content of one burnable and the content of the second not burnable. This way we can offer them instrumentals and original titles for burning and commercial copyright protected titles for listening only.
NB None of the content has been downloaded from the itunes store.
Your help on this matter would be very much appreciated.
Mark Anderson
Music dept
HMP & YOI Ashfield

Hi Patrick
Your solution to the problem seemed to be the answer but I now have another problem: not all the macs in the music room can 'see' i.e. share the new intel mac.
They are all connected via a Belkin switch using ethernet and sharing is enabled in all machines. Some of the iSite white iMacs can be seen by the new intel mac but they cannot 'see' the new intel mac. How can an ethernet connection work only one way ? We are using standard ethernet two way cable. All machines are running 10.5.3 apart from the new mac which is happy running 10.4.11.
If I could get all the macs in the room to 'see' the new intel machine, then we could run the intel machine as the Master iTunes Library and share it as you suggest 'read-only' to the other machines.
Has anyone any suggestions as to why this is happening ? Is there something other than turning sharing on in system prefs that one has to do to enable two communication between all machines ?
Thanks
Marco

How do you stop Mountain Lion from making endless copies and backups of everything?!

I already have a similar topic on this when I needed to figure out how to stop Mountain Lion from making endless copies of my text edit files and I was going to try the disabling of it that someone in that thread suggested, but I can't find where the Versions backups are being stored.
Anyway, tonight I cam across a new problem, when I went into "about this Mac" and looked at my Storage, I had almost 1gb of data in the "backups" section. I just happened to have Finder open when I went into the Time Machine in the status bar and when it entered Time Machine, I had dozens of copies of my desktop. Thing is, I don't have my Time Machine hard drive connected and I don't have a Time Capsule router/hard drive. And don't give me this garbage about how "It's not real backups, it's just a snapshot" or whatever, because the ONLY things that I have stored on my computer that I have altered since I got mountain lion is two Text Edit files and the Finder Desktop (and yes, I have checked almost all the programs I use, and of the things that Time Machine will open in, those are the only things that have backups listed that I can access) and almost 1gb is being taken up completely needlessly with the computer backing up things onto itself. Obviously these are more than just snapshots and are obviously the real files because after throwing EVERYTHING on my desktop into a file, that file is only 3.8mb in size, so that almost 1GB in backups is coming from SOMEWHERE.
The solution I aluded to in my first sentence also depends on going into the Terminal to make each individual app stop auto saving Versions, however, since my desktop is being backed up, there's no program to stop Mountain Lion from doing that.
Can anyone help me figure out how to make it stop backing up? Seriously, almost 1 gb is being totally wasted on a series of desktop items that are 3.8mb in size, one Text Edit file that is 250kb in size, and another text edit file that is 41kb in size. What person in Apple would possibly have thought this endless backing up of files onto the main hard drive would have been a good idea? So in a year if I did nothing but go on the internet, save one picture to one file on my desktop and did nothing else with my computer, would I have 200 gb of desktop backups that the computer saved onto itself? Are you kidding me? OR failing that, can anyone tell me how to find this damned backup file and delete it? I'm not an idiot, I know how to plug in a hard drive or flash drive and backup my information, I don't need my computer to be making hundreds of copies of every single file on my computer that I change slightly onto itself that not only needlessly eats up it's own space, but if the hard drive died, all those "backups" would be gone too because it wrote the backups to itself.
I am so frustrated by this totally ridiculous and wasteful "feature" they put in, it does nothing but waste hard drive space with it's hundreds of copies of everything you alter slightly. And I am absolutely not starting any video editing projects until I figure out how to turn this off. If around 4mb of total text and desktop backups add up to almost 1gb in a few weeks, what the heck is a video editing project going to end up in with size? Am I the only one completely flustered by this ridiculousness? Is there any point in writing into Apple to complain or are they just going to say "No, we're brilliant, we think this is an amazing feature so you just have to deal iwth it and when your hardd drive fills up, too bad, jerk!"?? Help! Thanks!

Well as I pointed out in my post, "Sadly, my Text Edit documents are still all there, every single time I opened them and made a small change, there is another copy stretching all the way back to the day I installed Mountain Lion." so if you can explain to me how July 26 - Aug 16 is a week, I will concede that it is a good idea. Short of that, no I have been capable of making my own backups since I was 16 years old (16 years ago) I don't need my computer to endlessly do it for me in a way I am completely unable to shut off. That's what I have external hard drives, flash drives, a DVD burner, Drop Box, E-mail (as in emailing copies to myself) and icloud for. If I am doing something and I don't have access to a single one of those options, I don't know why I brought my computer with me in the first place. And I don't see how you can say it's an illusory gain in disk space, hundreds of copies of text documents, garageband files, Final Cut files, Motion Files and basically any program that makes files onto my comptuer that I can myself make incremental changes to, those all need to be stored somehow. Again, if you can explain to me how July 26 - Aug 16 is a week, I will agree with you that that is a good thing because IF it only saved for a week, it wouldn't be an issue. Sadly, no matter how many links you post, I still have text edit backups stretching from today back to July 26. They're not going away and I have no reason to beleive any other file I edit is going to go away either since they haven't been. They're all there eating up HD space and this imaginary "week" limit is simply not coming into effect. I hate it and there needs to be a simple way to simply shut it off. I didn't spend hundreds of dollars on external drives just for my main hard drive to be filled up with hundreds un useless, undeletable backups of stuff I already have backed up.

I am making a calendar in iPhoto, picking photos from a folder, let's call it "2011 Pics," in iPhoto. After arranging all the photos and captions I decided I wanted to insert a new photo -- one that was not in "2011 Pics." So I inserted it into the folder

Add new photo to existing calendar folder in iPhoto
I am making a calendar in iPhoto, picking photos from a folder, let's call it "2011 Pics," in iPhoto. After arranging all the photos and captions I decided I wanted to insert a new photo -- one that was not in "2011 Pics." So I inserted it into the folder, but the picture does not show up on the scrolling menu of pictures at the left of the calendar-making page. This happened last year and in frustration I started all over again. But surely there is a way to add a new picture to a calendar that is already laid out.

Yes, the Old Master file has a folder for each year where I find all photos from that specific year. I am attaching a screen shot of the file.
In the meantime i have managed to download all photos (it did not download any video files though in mpg, avi, 3gp, m4v,mp4 and mov format) to a new iphoto library. Unfortunately the photos are quite mixed and often doubled up. I ma considering to purchase iphoto library which checks all duplicates in iphoto. this will save me a lot of time. What do you think?

Error while making a method in a file application

Hi !!!. How's all ?. My name is Agustin and I live in Córdoba (in the centre of Argentina) !!!. I would like to know if anyone can see if there is something wrong with this code !. The thing I tried to make is the following...
This program stores in a file songs... In this case, the author, the name of the song, the song and the length of thwe song...
I tried to make a method that returns the name of the songs that have certain words... Let say I type: "love goodbye"... the program will search in the file and returns for ex:
The songs which has "love" are:
Marcela Gandara - Antes de ti.
Jesus Adrian Romero - Me dice que me ama.
The songs which has "goodbye" are:
bla bla
bla bla
Hope you understand... Here is the code... What I want to know is the mistake I'm making... If you want the complete code, just send a mail or add me to the msn... [email protected]
public String buscadorLetras(String busq)
String auxF="";
String auxVec="";
int cant=0,band=0,num=0;
String aux="",aut="",let="",nomLet="";
String[] palabras=busq.trim().split(" ");
String[] palAux=busq.trim().split(" ");
for(int i=0;i<palabras.length;i++)
if(palabras.length()<1000)
for(int j=palabras[i].length();j<1000;j++)
palabras[i]+=" ";
else
palabras[i]=palabras[i].substring(0,1000);
try
for(int i=0;i<palabras.length;i++)
flujo.seek(0);
while(flujo.getFilePointer()<flujo.length())
for(int j=0;j<1000;j++)
aut+=flujo.readChar();
for(int j=0;j<1000;j++)
nomLet+=flujo.readChar();
for(int j=0;j<1000;j++)
let+=flujo.readChar();
cant=flujo.readInt();
if(let.indexOf(palabras[i])>=0)
band=1;
if(band==1)
aux+="\n"+nomLet;
num++;
band=0;
if(flujo.getFilePointer()==flujo.length())
auxF+="Las letras con la palabra "+palAux[i]+" son "+num+" - Lista:\n"+aux;
num=0;
aut="";
nomLet="";
let="";
band=0;
catch(IOException e)
{e.printStackTrace();}
return auxF;

public String buscadorLetras(String busq)
String auxF="";
String auxVec="";
int cant=0,band=0,num=0;
String aux="",aut="",let="",nomLet="";
String[] palabras=busq.trim().split(" ");
String[] palAux=busq.trim().split(" ");
for(int i=0;i<palabras.length;i++)
if(palabras.length()<1000)
for(int j=palabras[i].length();j<1000;j++)
palabras[i]+=" ";
else
palabras[i]=palabras[i].substring(0,1000);
try
for(int i=0;i<palabras.length;i++)
flujo.seek(0);
while(flujo.getFilePointer()<flujo.length())
for(int j=0;j<1000;j++)
aut+=flujo.readChar();
for(int j=0;j<1000;j++)
nomLet+=flujo.readChar();
for(int j=0;j<1000;j++)
let+=flujo.readChar();
cant=flujo.readInt();
if(let.indexOf(palabras[i])>=0)
band=1;
if(band==1)
aux+="\n"+nomLet;
num++;
band=0;
if(flujo.getFilePointer()==flujo.length())
auxF+="Las letras con la palabra "palAux[i]" son "num" - Lista:\n"+aux;
num=0;
aut="";
nomLet="";
let="";
band=0;
catch(IOException e)
{e.printStackTrace();}
return auxF;
}Edited by: agustinCba on Jan 20, 2009 6:49 PM

Getting Error while saving a transaction without making any changes to it.

Hi All,
I have a page where in the advance table I add few rows and save the transaction. First time when I save it everything works fine, but when I save it again without making any changes to the fields I get following error:
"Unable to perform transaction on the record. \nCause: The record has been deleted by another user. \nAction: Cancel the transaction and re-query the records to get the new data."
In the same page if I make any changes again it allows me to save the transaction.
Please guide how we can avoid it..
I have already checked many threads related to the issue but nothing has worked. Please help!!
Any help would be highly appreciated..
Regards,
Nisheeth

Hi All,
please help!!

Did you know that Verizonwireless is saving your checking account information when you pay your bill by check and then making it part of your "MyVerizon"? This means of course if they get hacked that information could be compromised. What do you think of

Did you know that Verizonwireless is saving your checking account information when you pay your bill by check and then making it part of your "MyVerizon" without you adding it? This means of course if they get hacked that information could be compromised. What do you think of this?

Credit card and debit card and checking and savings information is encrypted so it is possible to be hacked, but the odds are greater to get hit by the Love Boat then to have a wide scale hack.
Oh yes they do happen, Bank of America, Chase, Citibank, Target and quite a few others. But in all the years I have paid my invoice with saved card information I never been hacked.
You use good passwords and the risk is minimal.
Good Luck

Lack of loopback on Home Hub 3 is making me consid...

The lack of loopback on Home Hub 3 is making me considering quitting BT Infinity. Why? Because as a software developer this is a giant paint in the **bleep**!
Every application I develop from home has to use local IP addresses, which means it keeps adding development time to my projects as I cannot use hostnames and have to keep writing go-arounds. It's a giant PITA!
I mean, sure, if you didn't support some wacky new technology that only 1% of people used then that'd be understandable but BT Infinity is FAST internet and people who pay £40 a month for FAST internet usually aren't the clueless old people you think they are!
I don't even like BT I think you lot are a bunch of crooks, but I don't live in a cabled area in my new house so I'm stuck with you. Considering moving to a friends FTTC service even if I do have to pay £20 extra a month.
So BT, pull your finger out of your god **bleep** **bleep**, hire some decent developers and fix your **bleep** because I and thousands of other customers are wound up by this. You're doing nothing to inspire loyalty. Nothing.

Welcome to this forum. This is a BT domestic customer to customer help forum, any messages posted here do not go to BT.
Its possible one of the forum members may be able to help you if its a general enquiry.
You do have the alternative of using your own router, there are plenty of cheap cable routers available.
If you only have one PC connected, then you can connect it directly to the modem, by setting up a PPPoE network connection type.
There are some useful help pages here, for BT Broadband customers only, on my personal website.
BT Broadband customers - help with broadband, WiFi, networking, e-mail and phones.

Making a Windows 7 Installation USB Stick

This is a discussion of making a bootable Windows 7 Installation USB-stick Media. It might apply to making other USB connected "Disks" like Smartcards bootable too.
I recently had to do this (a Laptop with no build-in DVD drive and no USB DVD drive around). And it turned out to be surprisingly simple, using nothing but build in Windows tools from the Disk. I only found
this german langauge guide and nothing in english (but I might just have searched after the wrong terms, google has been wierd regarding langauge lately), so I thought I write it up (along with some problems I ran into).
Making a USB-Stick into a bootable Windows 7 (and propably Vista) Media is a 3 step process:
1. Create a Active, Primary, FAT32 Partition of 4+ GB on the stick
2. use bootsect.exe from Windows Disk to create the MBR and Partition Boot Record for that Partition
3. Copy all files from the Disk to said Partition
4. Test if it boots
Detail analysis:
Step 1 is so simple I doubt it needs explanations. Create enough free space on the USB disk (at worst delete all previous Partitions). Make a Priamry Partition of 4+ GiB. Mark it as Active. Format it in FAT32. The Guide used Diskpart,
but this step can be done with any Partition Tool under any Windows, Linux, UNIX or DOS.
While the choice of FAT32 seems a bit outdated, theye propably did not gave the relevant bootlaoder the ability to read NTFS. Or maybe they just though FAT32 is enough for a media that is mostly read. I have not tried what happens if I format it in NTFS, but
it might be possible.
Step 2 was the only tricky part. You need the programm "boot\bootsect.exe" from the Installation Media. It also must be run on a non-UEFI booted OS (otherwise it cancels out).
I had a Windows 8 on a new Laptop so I had a UEFI booted system. Luckily I also had a VMWare Windows 7 lying around. I just assigned the Windows 7 ISO image to the Windows 7 VM, then connected the USB drive to the host.
Once you have the USB stick in a a proper Windows mount the Parttion you created under 1 under any driveletter (should happen automatically under Windows), and open a console as Administrator (asumes DVD is drivletter is D: and the USB stick's partition
ins Driveletter E:):
//Go into the boot directory on the Install DVD
D:
cd boot
//You should see a command promt like "D:\BOOT>"
//Run bootsect.exe
bootsect.exe /nt60 d:
Step 3 is to either copy the contents of the DVD media (copy and paste) or the Image (Mount into Virtual DVD Drive and copy/paste, unpack ISO images contents) into the partition.
How does this compare to other Distribution ways?
To DVD:
There is no need for a DVD drive. Even if a bootable USB-DVD drive is avalible, the Stick or Card will only need only USB port (most USB drives need 2 Ports due the 1 Ampere energy need of the drives).
Flash Media has no seek times and much better throughput (the old weakpoint of any Disk and DVD/CD in particular)
A FAT32 partition is inherently writeable. So modifications to the "Installation media" like Implementing Service Packs and other Windwos Updates, Modifying ei.cfg/preactivation/setup answer files, implementing special Disk/RAID drivers into the Windows
PE or adding stuff that should be installed with Windows is easy (and do not requrie reburning a 4 GiB Image file).
Since it only needs a 4 GiB partition, on a big USB stick there would still be place for other Data Partitions
Since it relies on old techniques (Generic Bootloader + Active Primary Partition + partition boot loader), multiple Installation media on a big enough stick might be feasible (with a more advanced bootloader like GRUB). Have to test that part.
However, the cost/media is a lot higher then a DVD. So if you need multiple Medias it will propably be cheaper to use the old DVD approach.
Due to the needs of bootsec.exe, first creating the media can be more difficulty then just burning an image. But once it is bootable this programm is no longer needed.
To PXE/network Distrubution:
If you have the nessesary setup already (DHCP/PXE Server, powerfull network), the USB stick is likely inferior. The USB stick should beat a 100 MBIT Network easily, but will propably be beaten by a 1 GBIT Network. Network isntallation uses existing infrastructure
(that you need for other reasons anyway) so the cost per media is even lower then the DVD.
The PXE way also has even better modifyability - sending out different answer files or even automatically booting different images based on the Compuers MAC adress are tried techniques.
If you lack the nessesary setup, the USB stick is a lot easier to implement and a lot easier to transport.
Advanced things:
Need to check if the partition could be formated as NTFS. I prefer a Journalling Filesystem for my USB-sticks.
Need to check if using a advanced boot manager techniques (like Grub or modifciations to the BCD of the Windows PE) allows me to put multiple install media on one Stick (with one primary partition per "media"). Especially combining the x32/x86 and
x64 Windows Installation Media would be worthwhile. As would be inlcuding a Window 8 or Vista installation media.
Current Step 3 and 2 can propably be switched. I see no reason bootsect could not run from the USB stick as it runs from the DVD (it only accesses the MBR and
VBR of the Disk, areas not in use by Windows)
Steps 1 through 3 might be possible from the Windows PE environment. If so, only a computer with legacy BIOS boot would be nessesary (no actuall installation).
Windows 7 can be installed on a (U)EFI system, but I have not checked if I can use the boot from teh stick on such a Computer. Latest for Windows 8 Media UEFI compatibilty is nessesary.
Let's talk about MVVM: http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/b1a8bf14-4acd-4d77-9df8-bdb95b02dbe2 Please mark post as helpfull and answers respectively.

Advanced things:
Need to check if the partition could be formated as NTFS. I prefer a Journalling Filesystem for my USB-sticks.
Windows 7 can be installed on a (U)EFI system, but I have not checked if I can use the boot from teh stick on such a Computer. Latest for Windows 8 Media UEFI compatibilty is nessesary.
I converted the stick to NTFS using the convert.exe and it continued booting. So chances are high they only choose FAT32 in the example because no feature of NTFS was per nessesary in a "almost only reading" scenario like installation media.
The second part depends on the BIOS. I have a more advanced one where I can choose legacy boot options (like USB stick) in the boot option menu even when the default setting is UEFI, as long as I don't need Secure boot (wich I do not).
Another question arose: Windows 7 has the Kernel/BCD level ability to boot from .VHD Files. The only thing preventing version below corporate from using this feature is a license check that is run just before the login (so way after the booting has been
completed).
Starting with 3.0 Windows PE is based on the kernel of Windows 7. So the instlaltion system might have the ability to boot from .VHD too and might have no such check in place. If so, I could put both versions of the Windows 7 installer into .VHD, reducing the
need to have physical primary partitions for those.
Windows bootprocess vs. Linux boot process under BIOS:
The BIOS goes over all the boot media. If it finds one with a MBR, that one is executed and the BIOS part of the boot process is officially over.
-> Under Windows the MBR contains the "generic boot loader". A simple piece of code as old as BIOS (25 Years) that looks for the primary partition with "Active" Flag on "it's" disk. If it finds one, the Partition Boot Record of that parition is executed.
The MBR has done it's part
    -> NTLDR (NT too 2000), this one reads the boot.ini file and gives/executeds apropirate options
    -> BOOTMGR (Vista, 7), this one reads the BCD files
      -> Since Windows 7 BOOTMGR can also chainload the Partition Boot Record that is inside a .VHD File
    -> Wicher was used in Windows 3.X/95/98/ME
Higher versions can chainload lower versions, but must be designed for this and (re)installed in the proper "order".
The sometimes odd behavior that Windows 7 tries to keep 100 MiB in a seperate primary partition is there to have proper places for later additions to the BOOTMGR settings. Specifically it allows multiple BOOTMGR OS to use/edit the same BOOTMGR instace without
running into problems with "whose partition is active?" (since it is always the System Reserved one). It's not disimilar to having an extra /boot partition in Linux or how a GRUB's stage 2 works.
-> Under a typical Grub Legacy the MBR contains the Stage 1. It directly reads the Stage 2 from the proper partition/file system with a hardcoded path, but due to size limit of the MBR cannot do more. In some cases it starts a stage 1.5 wich has more
space to do work (63 sectors between MBR and first partition), but I never used this Setup
    -> Stage 2 loads the Grub Configuration from the disk. From here it depends on what OS you want to boot.
        -> For Linux or Unix the kernel is started directly.
        -> Any Windows OS up to 7 can be booted using the chainloader command. For the OS this is identical to having the partition choosen by the Generic Bootloader.
While it can be chainloaded by the Generic Bootloader from the active primary partition, GRUB and thus Linux has no
requirement for any Primary Partitions. Stage 1 is designed to directly access the specific File System containng the Stage 2. In fact it does not even need to reside on the same disk (as the Generic Bootloader has to).
If one does not need the Active Flag to control the Generic Bootloader (because a proper Stage 1 is installed in MBR) it is adviseable to mark wichever Windows Partition is chainloaded as active (up to Vista at least I had very odd behavior if the Windows boot
partition was not marked active, down to randomly shredded Partition boot managers).
After running a Windows Setup usually the Stage 1 has to be restored, as Windwos Setup will always write it's Generic Bootloader in the MBR. In order to get "rid" of a Grub all one has to do is overwrite the MBR with the Generic Bootloader and set the active
flag properly.
Let's talk about MVVM: http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/b1a8bf14-4acd-4d77-9df8-bdb95b02dbe2 Please mark post as helpfull and answers respectively.

I have a MacBook Pro (15-inch, Late 2008) and am currently running Snow Leopard 10.6.8. I would like to know which is the most stable upgrade for my model. I have read some reviews of Maverick and Yosemite making the older macs slower. Is this true?

I have a MacBook Pro (15-inch, Late 2008), Intel Core 2 Duo 2.53 GHz, 4GB Memory. and am currently running Snow Leopard 10.6.8.
I would like to know which is the most stable upgrade for my model? Mountain Lion, Mavericks or Yosemite?
When I had gone to the apple care centre in India a few months ago to upgrade my OSX to Mountain Lion, I was told that considering my macbook pro's specs, upgrading it would just make it less efficient, and that I should stick to Snow Leopard unless I consider buying a newer mac that would benefit from it. Is this true? I find it a bit hard to believe. Which update is most recommended?
I also notice that my mac has gotten considerably slower. While using chrome, it buffers and struggles with even just 5 tabs open. Could this have something to do with my current ios? As a precaution, I have always been making sure I have enough free space on disk i.e around 70 - 100 free out of 250GB.
Any advice is appreciated.
Thanks in advance.

Mavericks is no longer available from the App Store, so your choice is Yosemite. One option is to create a new partition (~30- 50 GB), install the new OS, and ‘test drive’ it. If you like/don’t like it it, you can then remove the partition. Do a backup before you do anything. By doing this, if you don’t like it you won't have to go though the revert process.
Check to make sure your applications are compatible.
Application Compatibility
Applications Compatibility (2)

I have an older macbook pro and the hard drive is starting to go (making loud noises). i tried to back up to an external hard drive (my passport essential se) using time machine and the computer keeps shutting down. suggestions to complete backup please?

I have an older macbook pro and the hard drive is starting to go (making loud noises). i tried to back up to an external hard drive (my passport essential se) using time machine and the computer keeps shutting down. the same thing happens when just trying to save my pictures from iphoto to a flash drive. suggestions to complete backup please?

Sounds like you'll need to access that drive while it is not booted. You need to replace it anyway, so do that, then one way or another (ext enclusure, et), access it and copy files.
If you keep trying to boot it, you might kill it for good and not get your files, so just swap it out first.

My ipod nano 5th gen is still making the clicking noise but won't play music and the screen is black what's wrong?!my ipod nano 5th gen is still making the clicking noise but won't play music and the screen is black what's wrong?!

my ipod nano 5th gen is still making the clicking noise but won't play music and the screen is black what's wrong?!

Downloading past purchases from the App Store, iBookstore, and iTunes Storehttp://support.apple.com/kb/HT2519
Message was edited by: michael08081

Making Multiple Digital Signatures Read-only in Form (Acrobat 9)

I have created a form which includes two (2) digital signature fields. What needs to occur with the form is Person1 fills the form and then digitally signs it thereby making the form fields read-only . Person2 then digitally signs the form which should make Person1's digital signature read-only.
Here's what I've done:
1) For the Person1 digital signature field, in Digital Signature Properties, under the Signed tab, I have selected Mark as read-only <all fields except these> and selected the Person2 digital signature field.
2) For the Person2 digital signature field, in Digital Signature Properties, under the Signed tab, I have selected Mark as read-only <all fields> since once Person2 signs the form I do not want Person1 to be able to clear the digital signature and make changes to the form.
Here's what actually occurs:
Step 1 above works fine. Once the signature is applied all the form fields are read-only except for the Person2 digital signature field.
The problem is that after Person2 digitally signs the form, even though I selected all fields as read-only, Person1 can 'clear' their signature which leaves all the form fields available for editing and leaves Person2's digital signature still on the form.
I honestly don't care about 'validating' signatures on this form since it's going to be printed but I cannot allow Person2's signature to remain on the form and allow Person1 to edit the form.
--Mike.

Hi!
I have the same problem. Have not been able to figure it out, although tried everything.
Hope somebody can help
- MackeMan

Program error when Making Contact Sheet from Bridge

I had been making contact sheet from the bridge using CS3 with no problem till a week ago when after completing the contact sheet, I get an error message saying that there was a program error, and photoshop locks up. I have to force quit. I am using a G5 dual 2.5 and 2 Gigs of RAM. I tried reinstalling without any luck.
Any ideas?

Does it work in a new User Account?
Have you tried cleaning-out your Caches (use Cocktail); or trashing Prefs.?

Making an thermostate

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