Why since installed Lion on my IMac it happened many times that my computer freeze and I have to restart everything before something work again?

To get rid of "pop-up ads and other crap on my computer when I am on the internet", click on Safari in the Menu bar, and select Preferences. Next select Extensions. Delete all of them. Restart Safari.
The first step in addressing the black screen is an SMC reset.
Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
Release all the keys and the power button at the same time.
Press the power button to turn on the computer.
Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.
Excerpt from
http://support.apple.com/kb/ht39

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Since installing lion, my mac no longer recognises my external hardrive also my ipad and iphone no longer automatically start itunes.

since installing lion, i can lo longer go to "my imac" and find external hard drives and other devices i plug into a usb hub. my ipad and iphone don't automatically open itunes only iphoto. my external hardrive used to also load automatically, now it doesn't and when i plug it in i can't find it. need some help i have some importanr things i need to transfer.

Try repairing the disk with disk utility, take a look at this link, http://support.apple.com/kb/HT1782

After installing Mountain Lion. Time on my computer freezes and I need to reboot to correct it. Is there a fix for this

To correct this issue I need to reboot. Has anyone else experienced this issue and is there a fix?

BOTH...when I try to hover over the time, the color wheel of death appears. AND when I go into system prefs, the clock tab selections have been deselected. When I try to select "show date and time in menu bar" again, it stalls for a bit, and then reverts to its deselected state. I've tried rkaufmann87's fix, and it works for just a bit, then back to whacky. Any ideas?

Internet connection is fine but sometimes pages won't load and I have to restart firefox before everything is okay why is this happening?

Okay three times now I would go to a page I've already gone to (like my email) and suddenly Firefox will say it can't load it even though the internet connection is fine, the cookies settings are fine, and I can get to the site on Google and I can get to the Firefox Homepage. Everything turns out fine when I leave Firefox and then start it again. I never had this problem before I updated to Firefox 4. I want to know why this is happening and what I can do to stop it.

Power off the router. Wait awhile. Power it back on. Wait until all the lights are lit up properly.
Restart the computer.
Start up in Safe Mode
http://support.apple.com/kb/PH11212

Since installing Lion my Apple TV can not synch to my MAC.

I receive the messageCheck that any firewall software running on this computer has been set to allow communication on port 3689.

There are no firewalls activated. I have followed all the information provided. I have had nothing by issues with the iMAC since installing Lion OS. So far the worst product from Apple. Wish Apple would have inform everyone that Lion would not be compatible with older MACs and 1st generation Apple TV.

Since I have installed Lion onto my iMac it's impossible to to copy any video file from the mac to an external support (ups-stick, Timecapsule). What's happened? What can I do?

Since I have installed Lion onto my iMac it's impossible to to copy any video file from the mac to an external support (ups-stick, Timecapsule). What's happened? What can I do?

If you just did upgrade Lion, give it some time. I recall having similar problems and some articles mention heavy background work after install - such as re-indexing for Spotlight etc. I couldn't even copy from folder to folder or e.g. iphoto to folder on the same disk. Went away after a day or two though.
I do however still have a problem with AFP access to one of the lion machines - kills it's network adaptors rather quickly. No luck solving this so far :|

Since installing lion my iMac and powebook can't find my printer

since installing lion my iMac and macbook pro can't find my printer (it is on the supported devices list and I downloaded the latest drivers).
I called canon and they stepped me through reseting my print system and reinstalling the print drivers and libraries but I have tried direct USB and via airport and the computers dont recognise the printer anymore. Just to be sure it was not the printer I tried to print from my iphone and that works...
I have changed the usb cable, changed usb ports and nothing can get the computers to recognise the device. Please help all advice welcome!

:-) here's an interesting link http://support.apple.com/kb/HT3669#canon
Note: If you've haven't used Software Update recently on your Mac, please run it before connecting a printer or scanner to update your Mac's database on what software is available.
I would also do this after you plug in your printer. Apple might have updates for your printer.
there is Canon Software for lion. try uninstalling everything and starting from 0.
http://www.usa.canon.com/cusa/consumer/products/printers_multifunction/office_al l_in_one_inkjet_printers/pixma_mx860#DriversAndSoftware
I also read that if your printer shows up in your printer list before the appropriate drivers are installed, it might mess things up, if you plug in your printer and see it after cleaning everything you had done previously off, then try removing it from the printer list (don't just unplug it, delete the profile). And then install the appropriate drivers.

Imac Intel freezin & crashing since installing lion

My late 2009 24" iMac has been freezin and crashing since installing lion. Sometimes red dots appear on the display and sometimes the image breaks up and then freezes. Happens in Safari, Photoshop, Word and other programs. Is it a NVIDIA driver issue? Is there a fix?

I don't know if this helps, but OS X Lion has to re-index all of the files (correct me if I'm wrong), therefore, if you have just installed OS X Lion, you need to give it some time untill it has indexed all the files again (which could take a while if you have loads of files), after this it should return to normal.
Otherwise, a clean install?
Tim

Since installing OSX 10 my iMac randomly shuts down and restarts. I can not determine why this is happening. Any ideas?

Since installing OSX 10, my iMac randomly shuts down and restarts. I can not determine why this is happening. Any ideas?

1. This is a comment on what you should and should not do to protect yourself from malicious software ("malware") that circulates on the Internet. It does not apply to software, such as keystroke loggers, that may be installed deliberately by an intruder who has hands-on access to the victim's computer. That threat is in a different category, and there's no easy way to defend against it. If you have reason to suspect that you're the target of such an attack, you need expert help.
If you find this comment too long or too technical, read only sections 5, 6, and 10.
OS X now implements three layers of built-in protection specifically against malware, not counting runtime protections such as execute disable, sandboxing, system library randomization, and address space layout randomization that may also guard against other kinds of exploits.
2. All versions of OS X since 10.6.7 have been able to detect known Mac malware in downloaded files, and to block insecure web plugins. This feature is transparent to the user, but internally Apple calls it "XProtect." The malware recognition database is automatically checked for updates once a day; however, you shouldn't rely on it, because the attackers are always at least a day ahead of the defenders.
The following caveats apply to XProtect:
It can be bypassed by some third-party networking software, such as BitTorrent clients and Java applets.
It only applies to software downloaded from the network. Software installed from a CD or other media is not checked.
As new versions of OS X are released, it's not clear whether Apple will indefinitely continue to maintain the XProtect database of older versions such as 10.6. The security of obsolete system versions may eventually be degraded. Security updates to the code of obsolete systems will stop being released at some point, and that may leave them open to other kinds of attack besides malware.
3. Starting with OS X 10.7.5, there has been a second layer of built-in malware protection, designated "Gatekeeper" by Apple. By default, applications and Installer packages downloaded from the network will only run if they're digitally signed by a developer with a certificate issued by Apple. Software certified in this way hasn't necessarily been tested by Apple, but you can be reasonably sure that it hasn't been modified by anyone other than the developer. His identity is known to Apple, so he could be held legally responsible if he distributed malware. That may not mean much if the developer lives in a country with a weak legal system (see below.)
Gatekeeper doesn't depend on a database of known malware. It has, however, the same limitations as XProtect, and in addition the following:
It can easily be disabled or overridden by the user.
A malware attacker could get control of a code-signing certificate under false pretenses, or could simply ignore the consequences of distributing codesigned malware.
An App Store developer could find a way to bypass Apple's oversight, or the oversight could fail due to human error.
For the reasons given above, App Store products, and other applications recognized by Gatekeeper as signed, are safer than others, but they can't be considered absolutely safe. "Sandboxed" applications may prompt for access to private data, such as your contacts, or for access to the network. Think before granting that access. Sandboxing security is based on user input. Never click through any request for authorization without thinking.
4. Starting with OS X 10.8.3, a third layer of protection has been added: a "Malware Removal Tool" (MRT). MRT runs automatically in the background when you update the OS. It checks for, and removes, malware that may have evaded the other protections via a Java exploit (see below.) MRT also runs when you install or update the Apple-supplied Java runtime (but not the Oracle runtime.) Like XProtect, MRT is effective against known threats, but not against unknown ones. It notifies you if it finds malware, but otherwise there's no user interface to MRT.
5. The built-in security features of OS X reduce the risk of malware attack, but they're not absolute protection. The first and best line of defense is always going to be your own intelligence. With the possible exception of Java exploits, all known malware circulating on the Internet that affects a fully-updated installation of OS X 10.6 or later takes the form of so-called "Trojan horses," which can only have an effect if the victim is duped into running them. The threat therefore amounts to a battle of wits between you and the malware attacker. If you're smarter than he thinks you are, you'll win.
That means, in practice, that you always stay within a safe harbor of computing practices. How do you know what is safe?
Any website that prompts you to install a “codec,” “plug-in,” "player," "extractor," or “certificate” that comes from that same site, or an unknown one, is unsafe.
A web operator who tells you that you have a “virus,” or that anything else is wrong with your computer, or that you have won a prize in a contest you never entered, is trying to commit a crime with you as the victim. (Some reputable websites did legitimately warn visitors who were infected with the "DNSChanger" malware. That exception to this rule no longer applies.)
Pirated copies or "cracks" of commercial software, no matter where they come from, are unsafe.
Software of any kind downloaded from a BitTorrent or from a Usenet binary newsgroup is unsafe.
Software that purports to help you do something that's illegal or that infringes copyright, such as saving streamed audio or video for reuse without permission, is unsafe. All YouTube "downloaders" are outside the safe harbor, though not all are necessarily harmful.
Software with a corporate brand, such as Adobe Flash Player, must be downloaded directly from the developer’s website. If it comes from any other source, it's unsafe. For instance, if a web page warns you that Flash is out of date, do not follow an offered link to an update. Go to the Adobe website to download it, if you need it at all.
Even signed applications, no matter what the source, should not be trusted if they do something unexpected, such as asking for permission to access your contacts, your location, or the Internet for no obvious reason.
"FREE WI-FI !!!" networks in public places are unsafe unless you can verify that the network is not a trap (which you probably can't.) Even then, do not download any software or transmit any private information while connected to such a network, regardless of where it seems to come from or go to.
6. Java on the Web (not to be confused with JavaScript, to which it's not related, despite the similarity of the names) is a weak point in the security of any system. Java is, among other things, a platform for running complex applications in a web page, on the client. That was always a bad idea, and Java's developers have proven themselves incapable of implementing it without also creating a portal for malware to enter. Past Java exploits are the closest thing there has ever been to a Windows-style virus affecting OS X. Merely loading a page with malicious Java content could be harmful.
Fortunately, client-side Java on the Web is obsolete and mostly extinct. Only a few outmoded sites still use it. Try to hasten the process of extinction by avoiding those sites, if you have a choice. Forget about playing games or other non-essential uses of Java.
Java is not included in OS X 10.7 and later. Discrete Java installers are distributed by Apple and by Oracle (the developer of Java.) Don't use either one unless you need it. Most people don't. If Java is installed, disable it — not JavaScript — in your browsers.
Regardless of version, experience has shown that Java on the Web can't be trusted. If you must use a Java applet for a task on a specific site, enable Java only for that site in Safari. Never enable Java for a public website that carries third-party advertising. Use it only on well-known, login-protected, secure websites without ads. In Safari 6 or later, you'll see a lock icon in the address bar with the abbreviation "https" when visiting a secure site.
Follow the above guidelines, and you’ll be as safe from malware as you can practically be. The rest of this comment concerns what you should not do to protect yourself.
7. Never install any commercial "anti-virus" or "Internet security" products for the Mac, as they all do more harm than good, if they do any good at all. Any database of known threats is always going to be out of date. Most of the danger is from unknown threats. If you need to be able to detect Windows malware in your files, use one of the free anti-virus products in the Mac App Store — nothing else.
Why shouldn't you use commercial "anti-virus" products?
Their design is predicated on the nonexistent threat that malware may be injected at any time, anywhere in the file system. Malware is downloaded from the network; it doesn't materialize from nowhere.
In order to meet that nonexistent threat, the software modifies or duplicates low-level functions of the operating system, which is a waste of resources and a common cause of instability, bugs, and poor performance.
To recognize malware, the software depends on a database of known threats, which is always at least a day out of date. Most of the real danger comes from highly targeted "zero-day" attacks that are not yet recognized.
By modifying the operating system, the software itself may create weaknesses that could be exploited by malware attackers.
8. An anti-malware product from the App Store, such as "ClamXav," doesn't have these drawbacks. That doesn't mean it's entirely safe. It may report email messages that have "phishing" links in the body, or Windows malware in attachments, as infected files, and offer to delete or move them. Doing so will corrupt the Mail database. The messages should be deleted from within the Mail application.
An anti-virus app is not needed, and should not be relied upon, for protection against OS X malware. It's useful only for detecting Windows malware. Windows malware can't harm you directly (unless, of course, you use Windows.) Just don't pass it on to anyone else.
A Windows malware attachment in email is usually easy to recognize. The file name will often be targeted at people who aren't very bright; for example:
♥♥♥♥♥♥♥♥♥♥♥♥♥♥!!!!!!!H0TBABEZ4U!!!!!!!.AVI♥♥♥♥♥♥♥♥♥♥♥♥♥♥.exe
Anti-virus software may be able to tell you which particular trojan it is, but do you care? In practice, there's seldom a reason to use the software unless an institutional policy requires it.
The ClamXav developer won't try to "upsell" you to a paid version of the product. Other developers may do that. Don't be upsold. For one thing, you should not pay to protect Windows users from the consequences of their choice of computing platform. For another, a paid upgrade from a free app will probably have the disadvantages mentioned in section 7.
9. It seems to be a common belief that the built-in Application Firewall acts as a barrier to infection, or prevents malware from functioning. It does neither. It blocks inbound connections to certain network services you're running, such as file sharing. It's disabled by default and you should leave it that way if you're behind a router on a private home or office network. Activate it only when you're on an untrusted network, for instance a public Wi-Fi hotspot, where you don't want to provide services. Disable any services you don't use in the Sharing preference pane. All are disabled by default.
10. As a Mac user you don't have to live in fear that your computer may be infected every time you install software, read email, or visit a web page. But neither should you assume that you will always be safe from exploitation, no matter what you do. The greatest harm done by security software is precisely its selling point: it makes people feel safe. They may then feel safe enough to take risks from which the software doesn't protect them. Nothing can lessen the need for safe computing practices.

Since installing Lion the desktop view occassionally jumps to 'grid' view when I turn the computer on. Why? It is set to manual in the view menu.

Since installing Lion the desktop view occassionally jumps to 'grid' view when I turn the computer on. Why? It is set to manual in the view menu.

Thanks for that information!
I'm sure I will be calling AppleCare, but the problem is, they charge for the phone calls don't they? Because I don't have money to be spending to be on the phone with a support service.
In other things, it seemed like the only time my MacBook was working was when I had Snow Leopard without the 10.6.8 update download that was supposed to be done to prepare for OS X Lion.
When I look at the information of my HD it says that I have 10.6.8 but that was the install that it claimed to have failed and caused me to restart resulting in all of the repeated problems.
Also, because my computer is currently down, and I've lost all files how would that effect the use of my iPhone? Because if it doesn't get fixed by the time OS 5 is released, how would I be able to upgrade?!

Why is ical not syncing since installing Lion?

Since installing Lion on July 29th, nothing new from my iPhone4's iCal has synced to my computer's iCal as it usually does. I see by other discussions, no answers so far. But just in case, I wanted to post as well.

Tongue in cheek: Perhaps it was designed to work just as it was designed to look. Like some old desk calendar with a leather frame and torn off pages. Syncing? What's that?

Since I installed Lion on my macbook the LED light does not pulse when I close the screen - the sleep function does not work.

Since I installed Lion on my macbook the LED light does not pulse when I close the screen - the sleep function does not work neither when chosen after pressing the button nor chosen in the apple menu..

I have had the same problem but on another forum it was suggested that disabling internet sharing would solve this. This fix seems to work on my machine - why it works I do not understand

Since installing Lion, I have not been able to utilize Time Machine (does not recognize the back-up drive); my wireless mouse does not function properly; I have experienced unreasonable delays in the system. Is there a fix or upgrade coming?

Is there a fix or upgrade to deal with the many problems I am experiencing since I installed Lion? I can no longer utilize Time Machine (Does not see the back-up drive); my wireless mouse does not work properly; my iMac has slowed down considerably. I am reminded of having a PC machine again. Bummer!

Either downgrade to Snow Leopard or try reinstalling Lion.
Reinstalling Lion Without the Installer
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alterhatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall Lion: Select Reinstall Lion and click on the Continue button.
Note: You can also re-download the Lion installer by opening the App Store application. Hold down the OPTION key and click on the Purchases icon in the toolbar. You should now see an active Install button to the right of your Lion purchase entry. There are situations in which this will not work. For example, if you are already booted into the Lion you originally purchased with your Apple ID or if an instance of the Lion installer is located anywhere on your computer.
Downgrade Lion to Snow Leopard
1. Boot from your Snow Leopard Installer Disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed.
4. Quit DU and return to the installer. Install Snow Leopard.
This will erase the whole drive so be sure to backup your files if you don't have a backup already. If you have performed a TM backup using Lion be aware that you cannot restore from that backup in Snow Leopard (see below.) I suggest you make a separate backup using Carbon Copy Cloner 3.4.1.
If you have Snow Leopard Time Machine backups, do a full system restore per #14 in Time Machine - Frequently Asked Questions. If you have subsequent backups from Lion, you can restore newer items selectively, via the "Star Wars" display, per #15 there, but be careful; some Snow Leopard apps may not work with the Lion files.

Pages '09 won't open Word documents since installing Lion

Since installing Lion I can no longer open Word documents. I get the following window
My intel iMac is just a year old and all software is current, both Lion and Pages. If I transfer the word documents to my 4 year old Macbook running the same Pages and Snow Leopard the files open as they should. Can anyone suggest a solution. I would be very grateful. Thanks.

That's what I have done, but then I am a long term Apple user and wised up years ago.
Rodney Boyce wrote:
"You can't open the application Microsoft Word because Power PC applications are no longer supported."
That does sound like you are simply double clicking on the exported .doc file which will open Word.
Try dragging it onto Pages or right mouse clicking > Open with…
I installed Lion on an external Hard Drive so I could still get my work done in Snow Leopard.
Peter

TS3276 After installing Lion in my iMac, some formatted emails contain in sections of the text rows of letter A contained in boxes.

After installing Lion in my iMac, some formatted emails contain, in some sections of the text, rows of the letter A contained in boxes. See attachment.

In general theory, one now has the Edit button for their posts, until someone/anyone Replies to it. I've had Edit available for weeks, as opposed to the old forum's ~ 30 mins.
That, however, is in theory. I've posted, and immediately seen something that needed editing, only to find NO Replies, yet the Edit button is no longer available, only seconds later. Still, in that same thread, I'd have the Edit button from older posts, to which there had also been no Replies even after several days/weeks. Found one that had to be over a month old, and Edit was still there.
Do not know the why/how of this behavior. At first, I thought that maybe there WAS a Reply, that "ate" my Edit button, but had not Refreshed on my screen. Refresh still showed no Replies, just no Edit either. In those cases, I just Reply and mention the [Edit].
Also, it seems that the buttons get very scrambled at times, and Refresh does not always clear that up. I end up clicking where I "think" the right button should be and hope for the best. Seems that when the buttons do bunch up they can appear at random around the page, often three atop one another, and maybe one way the heck out in left-field.
While I'm on a role, it would be nice to be able to switch between Flattened and Threaded Views on the fly. Each has a use, and having to go to Options and then come back down to the thread is a very slow process. Jive is probably incapable of this, but I can dream.
Hunt

Why since installed Lion on my IMac it happened many times that my computer freeze and I have to restart everything before something work again?

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