What version is compatible for the Mac Powerbook 4G OS system 10.5.8 ?

I would like to have Firefox for my everyday use and the free download states that the current version is not compatible with this Mac Powerbook 4G OS 10.5.8. Is there an older version I could download at your website?

As of Firefox 4.0 and newer one needs both OSX 10.5+ and '''Intel''' hardware.
Firefox 3.6.* from Mozilla is the last to work on PPC. http://www.mozilla.org/en-US/firefox/all-older.html (Firefox 3.6.25 was released recently).
Since you have a PPC there is a third-party option for Firefox 9.0 at http://www.floodgap.com/software/tenfourfox/ however do note http://code.google.com/p/tenfourfox/wiki/PluginsNoLongerSupported if you use this build.

Similar Messages

What monitors are compatible with the Mac mini?

What monitors are compatible with the Mac mini?

Is this the new Mini?
Most any Thunderbolt, HDMI, DVI, or VGA monitor will work with the new Mini, though many problems exist with the HDMI port it seems.
Video Card:
HD Graphics 4000
VRAM Type:
Integrated
Details:
This model has an Intel HD Graphics 4000 graphics processor that shares memory with the system.
Standard VRAM:
512 MB*
Maximum VRAM:
512 MB*
Display Support:
Dual Displays
Resolution Support:
1920x1200*
2nd Display Support:
Dual/Mirroring*
2nd Max. Resolution:
2560x1600*
Details:
*This model simultaneously supports 1920x1200 on an HDMI or a DVI display (using the included HDMI-to-DVI adapter) and 2560x1600 on a Thunderbolt or Mini DisplayPort display or even a VGA display (with an optional Mini DisplayPort-to-VGA adapter, which is compatible with the Thunderbolt port).
http://www.everymac.com/systems/apple/mac_mini/specs/mac-mini-core-i7-2.6-late-2 012-specs.html

What hardware is compatible with the MAC OS

Other than the MAC hardware available from Apple, what hardware is compatible with the Mac OS? Is there any AMD compatible hardware or other Intel 64 bit hardware that is compatible with the OS?
Like the Mac Pro but ... Mac OS X (10.4.8)

Hi Boing;
If you feel that way, you are out of luck. Besides not working well at all, it is illegal.
Allan

I need to use an older version of FireFox for the Mac (3.0) to be compatible with another program; how can I get it?

My company uses SalesForce CRM and recently changed wholesale to Macs. Unfortunately, certain functions in SalesForce are not compatible with the current version of Safari or any version of FireFox newer than 3.0 and we need to be able to use those functions. How can I download that version for the Mac?

There is also a portable Firefox 3.0 version via this link:
http://prdownloads.sourceforge.net/osxportableapps/PortableFirefox_3.0_en-US-OSX_r4.0u.dmg?download
It can take some time before the download starts.

Imessage on Mac has my wifes phone number and its greyed out and i cant change it to my number (on the beta version of iMessage for the mac)

hey-- so iMessage on ONE computer has my wifes phone number in under iMessage and its greyed out and i cant change it to my number. any ideas? ive done what people have suggested on these forums, e.g., check your apple id make sure your number is associated with it etc. how do i change the iMessage number from my wifes to my actual number? thanks! R

HI,
This can depend on the the Apple ID that is used.
I was under the impression that the invididual parts of an iCloud ID could be "registered" separately for iMessages but this may not be correct.
I have an Apple ID that is based on a email from a source external to Apple. (an old Dial-up account email)
I registered this for iCloud and at the time got an @me.com name as well.
I also have two iPhones so I decided to use the @me.com name on one iPhone and the older Dial-up on the other.
This seemed to work up to the OS X10.8.2 and iOS 6 updates.
AT this points I did the OS X one first then the iPhones
I got alerts in Messages on the Mac to add the Dial-up ID iPhone's number to Messages which I accepted.
The Messages Menu > Accounts > iMessages showed the iPhone Number as an alternative Receive ID and offered itself in the Drop as the Send from ID.
I then set up the second iPhone and got an alert in Messages to add the Apple ID and the iPhone number to Messages.
I said no to this.
At iOS 6 this did not get added to the Messages > Preferences > Accounts > iMessage panel.
However at iOS 6.0.2 the iPhones are showing their own Numbers as Greyed out and even though I refused again the @me.com ID and second iPhone's Number they have been added to the Message Menu > Preferences > Accounts > iMessages pane although they are not ticked.
The only link these two Apple ID Names have is that they are both associated with the iCloud Account.
(I Can log in to the same iTunes account with either name, and post here, and access iCloud in a web browser - the password is the same).
I have successfully managed to get one iPhone to have it's greyed out Number ticked so it can accept iMessages sent to the Number.
This involved removing the Apple ID on that iPhone, Closing iMessages, restarting iMessages and then re-adding the Apple ID
I did get an alert to say the ID would not work anywhere in iMessages when removing it.
It was 24 hours before I got an alert in Messages again to add the iPhone Number and Apple ID (I said no and they are not active but do show in the iMessage account on the Mac)
I am a little confused by this bit:-
...ONE computer has my wife's phone number in under iMessage and its greyed out ...
I can see the iPhone Numbers in Messages Menu > Preferences > Accounts >iMessages Account pane but they are not greyed out even when not active
They are only greyed out on the iPhone's themselves.
I would also make sure the Apple IDs used on each computer and it's related iPhone are separate from each other.
9:52 PM Tuesday; November 27, 2012
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
 iMac 2.5Ghz 5i 2011 (Mountain Lion 10.8.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
 Couple of iPhones and an iPad
"Limit the Logs to the Bits above Binary Images."  No, Seriously

What version is compatible with the Kindle Fire HD?

I don't know what the system is in the Kindle Fire HD and need to download Adobe Flash player.that is compatible with it.

Read this: "Why can't I install Flash Player on my Tablet?" (Kindle or Samsung Galaxy)

I have the old version of Firefox but when I download the update for firefox for the Mac OS X it says it is not compatible with my system which is 10.4.11 on the Mac. Can someone help me.

I need to update my current version of firefox for the Mac and when I do it says it is not compatible for my system but I can't find anywhere that it says what the system requirements are for the new version of firefox for the Mac.

Firefox 4 requires at least OS X 10.5 and an Intel Mac. There is a third party version of Firefox 4 that runs on OS X 10.4/10.5 and PPC Macs, for details see http://www.floodgap.com/software/tenfourfox
If you prefer, you can get the latest version of Firefox 3.6 from http://www.mozilla.com/en-US/firefox/all-older.html
Mozilla are working to prevent Mac users with non-compatible systems from getting the notification about Firefox 4, and also not displaying the "Download Firefox 4" button on http://www.mozilla.com
For the full system requirements see http://www.mozilla.com/en-US/firefox/system-requirements.html

Free at last from Word for the Mac 2011

     I used Word for 20 years but when I moved on to Lion, I found the 2011 version
of Word for the Mac to be a muddled, useless ball of snakes. I switched to Apple's Pages
and was pleased with its intuitive and productive arrangement. What a difference!
    With Pages, it is especially easy to produce items that are a mix of text and
drawing elements (e.g., borders). Unllike the disaster of Word's Ribbon, it has an
area at the top where you can display (from a wide array of options) those
choices of production tools you wish to have available.
     I think if you give Pages a try, you'll never go back to Word.

They did it once already.
On 12.01.2012 20:36, jcb193 wrote:
RE: 10YR CUSTOMER
SWITCHING TO AT||AMP||T FROM VERIZON FOR THE NOKIA 900 LUMIA
created by jcb193 in Windows Phone Discussions - View the full
discussion

Announcing the Audition for the Mac public beta

We are very pleased to announce that Adobe Audition for the Mac is now available for public beta. (You can see the press release here.) We encourage you to give it a try and provide us with feedback.
Audition will be shipped on both Windows and Mac OS when the time comes, but given that Mac OS is a new platform for Audition it is important we gather as much feedback and testing as possible in order to make this is a great product for all users.
Visit the Adobe Audition Labs page for download information and more details: http://www.adobe.com/go/audition_labs.

Okay, some answers. Yes, this is only a Mac beta. This is simply because no version of Audition for the Mac has ever been released, and it appears to be Mac-based comments they are looking for at present.
The press release is still there - it hasn't been withdrawn because it's effectively out in the wild now - what would be the point of withdrawing it? Anyway, in it is the line " Adobe is providing audio editors and video professionals with more choices for audio production". So it's very clear that how this is achieved is an issue, at least - it has to be to fulfil the intention of that statement. But in the present beta release, integration is not present, as you have discovered. I can't comment any more about that, and I'm not sure that the staffers can either - we are all under a degree of gagging about anything that isn't in the press release, or Jason Levine's video, pretty much.
If you want to find out a bit more than you will on this forum about some of the new audio-related aspects of the release, then read or participate in the AudioMasters thread about it - here. If you read the thread, you will find out why...

Where can I find a mapping of the Mac Powerbook version number (e.g., 3.1) to the dates (e.g., "late 2007") that Apple uses for indicating compatibilty with OS upgrades?

Where can I find a mapping of the Mac Powerbook version number (e.g., 3.1) to the dates (e.g., "late 2007") that Apple uses for indicating compatibilty with OS upgrades?

There were no PowerBooks made in 2007. By then Apple had switched over to Intel and they were making MacBook instead.
If the MacBook is what you really want try http://en.wikipedia.org/wiki/MacBook
Allan

How can I get my Microsoft Outlook for MAC to work with ATT/Yahoo's email system? ATT/Yahoo is telling me they're not compatible with the MAC version...

I have tried to make my Microsoft Office for MAC's OUTLOOK program work as the default email system. But ATT/Yahoo says its service is not compatible with the MAC version of Microsoft Outlook... Has anyone been able to make it work? I can't change my ISP right now.

You might try asking your OutLook for Mac question in the Office for Mac forums. http://answers.microsoft.com/en-us/mac?auth=1

I have quicken 2000 for mac on an old mac and wish to upgrade to a new laptop running snow leopard. Quicken 2006 on my new laptop runs, but will not recognize the old data qif files. What version of quicken for mac will recognize files from 2000?

I have quicken 2000 for mac on an old mac and wish to upgrade to a new laptop running snow leopard. Quicken 2006 on my new laptop runs, but will not recognize the old data qif files. What version of quicken for mac will recognize files from 2000? Or, is there a special procedure I should be following?

can't open Quicken 2000 files in classic mode on new MacBook Pro version 10.6.7

What is the best 'cleaning system' for the Mac?

What do you recommend as the best 'cleaning system' for the Mac!

How to maintain a Mac
Make two or more backups of all your files
One backup is not enough to be safe. A copy of a backup doesn't count as another backup; all backups must be made directly from the original data.
Keep at least one backup off site at all times in case of disaster. Backing up to a cloud-data service is one way to accomplish this, but don't rely exclusively on such backups.
In fact, don’t rely exclusively on any single backup method, such as Time Machine.
If you get an indication that a backup has failed, don't ignore it.
Keep your software up to date
In the App Store or Software Update preference pane (depending on the OS version), you can configure automatic notifications of updates to OS X and other Mac App Store products. Some third-party applications from other sources have a similar feature, if you don’t mind letting them phone home. Otherwise you have to check yourself on a regular basis.
Keeping up to date is especially important for complex software that modifies the operating system, such as device drivers. Don't install such modifications unless they're absolutely necessary. Remove them when they are no longer needed. Before installing any Apple update, you must check that all system modifications that you use are compatible. Incompatibility with third-party software is by far the most common cause of difficulties with system updates.
Don't install crapware
...such as “themes,” "haxies," “add-ons,” “toolbars,” “enhancers," “optimizers,” “accelerators,” "boosters," “extenders,” “cleaners,” "doctors," "tune-ups," “defragmenters,” “firewalls,” "barriers," “guardians,” “defenders,” “protectors,” most “plugins,” commercial "virus scanners,” "disk tools," or "utilities." With very few exceptions, such stuff is useless or worse than useless. Above all, avoid any software that purports to change the look and feel of the user interface.
It's not much of an exaggeration to say that the whole "utility" software industry for the Mac is a fraud on consumers. The most extreme examples are the "CleanMyMac," "TuneUpMyMac," and “MacKeeper” scams, but there are many others.
As a rule, you should avoid software that changes the way other software works. Plugins for Photoshop and similar programs are an obvious exception to this rule. Safari extensions, and perhaps the equivalent for other web browsers, are a partial exception. Most are safe, and they're easy to get rid of if they don't work. Some may cause the browser to crash or otherwise malfunction. Some are malicious. Use with caution, and install only well-known extensions from relatively trustworthy sources, such as the Safari Extensions Gallery.
Only install software that is useful to you, not (as you imagine) to the computer. For example, a word processor is useful for writing. A video editor is useful for making movies. A game is useful for fun. But a "cache cleaner" isn't useful for anything. You didn't buy a computer so you could clean caches.
Never install any third-party software unless you know how to uninstall it. Otherwise you may create problems that are very hard to solve. Do not rely on "utilities" such as "AppCleaner" and the like that purport to remove software.
Don't install bad, conflicting, or unnecessary fonts
Whenever you install new fonts, use the validation feature of the built-in Font Book application to make sure the fonts aren't defective and don't conflict with each other or with others that you already have. See the built-in help and this support article for instructions.
Deactivate or remove fonts that you don't really need to speed up application launching.
Avoid malware
"Malware" is malicious software that circulates on the Internet. This kind of attack on OS X was once so rare that it was hardly a concern, but it's now increasingly common and dangerous.
There is some built-in protection against malware, but you can’t rely on it—the attackers are always at least one day ahead of the defense. You can’t rely on third-party "anti-virus" products for protection either. What you can rely on is common-sense awareness—not paranoia, which only makes you more vulnerable.
Never install software from an untrustworthy or unknown source. If in doubt, do some research. Any website that prompts you to install a “codec” or “plugin” that comes from the same site, or an unknown site, is untrustworthy. Software with a corporate brand, such as Adobe Flash Player, must come directly from the developer's website. No intermediary is acceptable, and don’t trust links unless you know how to parse them. Any file that is automatically downloaded from the web, without your having requested it, should go straight into the Trash. A web page that tells you that your computer has a “virus,” or that anything else is wrong with it, is a scam.
In OS X 10.7.5 or later, downloaded applications and Installer packages that have not been digitally signed by a developer registered with Apple are blocked from loading by default. The block can be overridden, but think carefully before you do so.
Because of recurring security issues in Java, it’s best to disable it in your web browsers, if it’s installed. Few websites have Java content nowadays, so you won’t be missing much. This action is mandatory if you’re running any version of OS X older than 10.6.8 with the latest Java update. Note: Java has nothing to do with JavaScript, despite the similar names. Don't install Java unless you're sure you need it. Most people don't.
Don't fill up your disk or SSD
A common mistake is adding more and more large files to your home folder until you start to get warnings that you're out of space, which may be followed in short order by a startup failure. This is more prone to happen on the newer Macs that come with an internal SSD instead of the traditional hard drive. The drive can be very nearly full before you become aware of the problem.
While it's not true that you should or must keep any particular percentage of space free, you should monitor your storage use and make sure you're not in immediate danger of using it up. According to Apple documentation, you need at least 9 GB of free space on the startup volume for normal operation.
If storage space is running low, use a tool such as OmniDiskSweeper to explore the volume and find out what's taking up the most space. Move seldom-used large files to secondary storage.
Relax, don’t do it
Besides the above, no routine maintenance is necessary or beneficial for the vast majority of users; specifically not “cleaning caches,” “zapping the PRAM,” "resetting the SMC," “rebuilding the directory,” "defragmenting the drive," “running periodic scripts,” “dumping logs,” "deleting temp files," “scanning for viruses,” "purging memory," "checking for bad blocks," "testing the hardware," or “repairing permissions.” Such measures are either completely pointless or are useful only for solving problems, not for prevention.
To use a Mac effectively, you have to free yourself from the Windows mindset that every computer needs regular downtime for maintenance such as "defragging" and "registry cleaning." Those concepts do not apply to the Mac platform.
A well-designed computing device is not something you should have to think about much. It should be an almost transparent medium through which you communicate, work, and play. If you want a machine that needs a lot of attention just to keep going, use a PC, or collect antique cars.
The very height of futility is running an expensive third-party application called “Disk Warrior” when nothing is wrong, or even when something is wrong and you have backups, which you must have. Disk Warrior is a data-salvage tool, not a maintenance tool, and you will never need it if your backups are adequate. Don’t waste money on it or anything like it.

What is the cause for the mac to become slow

what is the cause for the mac to become slow?

Things You Can Do To Resolve Slow Downs
If your computer seems to be running slower here are some things you can do:
Start with a visit to: OS X Maintenance - MacAttorney.
Boot into Safe Mode then repair your hard drive and permissions:
Repair the Hard Drive and Permissions Pre-Lion/Mountain Lion
Boot from your OS X 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. 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 installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
Repair the Hard Drive - Lion/Mountain Lion
Boot from your Lion Recovery HD. 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, then click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu. Select Restart from the Apple menu.
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. Alternatively, 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.
Restart your computer normally and see if this has helped any. Next do some maintenance:
Suggestions for OS X Maintenance
For situations Disk Utility cannot handle the best third-party utility is Disk Warrior; DW only fixes problems with the disk directory, but most disk problems are caused by directory corruption; Disk Warrior 4.x is now Intel Mac compatible.
OS X performs certain maintenance functions that are scheduled to occur on a daily, weekly, or monthly period. The maintenance scripts run in the early AM only if the computer is turned on 24/7 (no sleep.) If this isn't the case, then an excellent solution is to download and install a shareware utility such as Macaroni, JAW PseudoAnacron, or Anacron that will automate the maintenance activity regardless of whether the computer is turned off or asleep. Dependence upon third-party utilities to run the periodic maintenance scripts was significantly reduced since Tiger. These utilities have limited or no functionality with Snow Leopard or Lion and should not be installed.
OS X automatically defragments files less than 20 MBs in size, so unless you have a disk full of very large files there's little need for defragmenting the hard drive. As for virus protection there are few if any such animals affecting OS X. You can protect the computer easily using the freeware Open Source virus protection software ClamXAV. Personally I would avoid most commercial anti-virus software because of their potential for causing problems. For more about malware see Macintosh Virus Guide.
I would also recommend downloading a utility such as TinkerTool System, OnyX 2.4.3, or Cocktail 5.1.1 that you can use for periodic maintenance such as removing old log files and archives, clearing caches, etc.
For emergency repairs install the freeware utility Applejack. If you cannot start up in OS X, you may be able to start in single-user mode from which you can run Applejack to do a whole set of repair and maintenance routines from the command line. Note that AppleJack 1.5 is required for Leopard. AppleJack 1.6 is compatible with Snow Leopard. There is no confirmation that this version also works with Lion.
When you install any new system software or updates be sure to repair the hard drive and permissions beforehand.
Get an external Firewire drive at least equal in size to the internal hard drive and make (and maintain) a bootable clone/backup. You can make a bootable clone using the Restore option of Disk Utility. You can also make and maintain clones with good backup software. My personal recommendations are (order is not significant):
1. Carbon Copy Cloner
2. Data Backup
3. Deja Vu
4. SuperDuper!
5. SyncTwoFolders
6. Synk Pro
7. Synk Standard
8. Tri-Backup
Visit The XLab FAQs and read the FAQs on maintenance, optimization, virus protection, and backup and restore.
Additional suggestions will be found in Mac maintenance Quick Assist.
Referenced software can be found at CNet Downloads or MacUpdate.
Additional Hints
Be sure you have an adequate amount of RAM installed for the number of applications you run concurrently. Be sure you leave a minimum of 10% of the hard drive's capacity as free space.
Add more RAM. If your computer has less than 2 GBs of RAM and you are using OS X Leopard or later, then you can do with more RAM. Snow Leopard and Lion work much better with 4 GBs of RAM than their system minimums. The more concurrent applications you tend to use the more RAM you should have.
Always maintain at least 15 GBs or 10% of your hard drive's capacity as free space, whichever is greater. OS X is frequently accessing your hard drive, so providing adequate free space will keep things from slowing down.
Check for applications that may be hogging the CPU:
Open Activity Monitor in the Utilities folder. Select All Processes from the Processes dropdown menu. Click twice on the CPU% column header to display in descending order. If you find a process using a large amount of CPU time, then select the process and click on the Quit icon in the toolbar. Click on the Force Quit button to kill the process. See if that helps. Be sure to note the name of the runaway process so you can track down the cause of the problem.
Often this problem occurs because of a corrupted cache or preferences file or an attempt to write to a corrupted log file.

What software is recommended for the maintenance of mac?

What software is recommended for the maintenance of mac?

How to maintain a Mac
1. Make redundant backups, keeping at least one off site at all times. One backup is not enough. Don’t back up your backups; all should be made directly from the original data. Don’t rely completely on any single backup method, such as Time Machine. If you get an indication that a backup has failed, don't ignore it.
2. Keep your software up to date. In the App Store or Software Update preference pane (depending on the OS version), you can configure automatic notifications of updates to OS X and other Mac App Store products. Some third-party applications from other sources have a similar feature, if you don’t mind letting them phone home. Otherwise you have to check yourself on a regular basis.
Keeping up to date is especially important for complex software that modifies the operating system, such as device drivers. Before installing any Apple update, you must check that all such modifications that you use are compatible. Incompatibility with third-party software is by far the most common cause of trouble with system updates.
3. Don't install crapware, such as “themes,” "haxies," “add-ons,” “toolbars,” “enhancers," “optimizers,” “accelerators,” "boosters," “extenders,” “cleaners,” "doctors," "tune-ups," “defragmenters,” “firewalls,” "barriers," “guardians,” “defenders,” “protectors,” most “plugins,” commercial "virus scanners,” "disk tools," or "utilities." With very few exceptions, such stuff is useless or worse than useless. Above all, avoid any software that purports to change the look and feel of the user interface.
The more heavily promoted the product, the more likely it is to be garbage. The most extreme example is the “MacKeeper” scam.
As a rule, the only software you should install is that which directly enables you to do the things you use a computer for, and doesn't change the way other software works.
Safari extensions, and perhaps the equivalent for other web browsers, are a partial exception to the above rule. Most are safe, and they're easy to get rid of if they don't work. Some may cause the browser to crash or otherwise malfunction. Some are malicious. Use with caution, and install only well-known extensions from relatively trustworthy sources, such as the Safari Extensions Gallery.
Never install any third-party software unless you know how to uninstall it. Otherwise you may create problems that are very hard to solve.
4. Beware of malware. Malware is malicious software that circulates on the Internet. This kind of attack on OS X used to be so rare that it was hardly a concern, but it's now increasingly common, and increasingly dangerous.
There is some built-in protection against downloading malware, but you can’t rely on it — the attackers are always at least one day ahead of the defense. You can’t rely on third-party protection either. What you can rely on is common-sense awareness — not paranoia, which only makes you more vulnerable.
Never install software from an untrustworthy or unknown source. If in doubt, do some research. Any website that prompts you to install a “codec” or “plugin” that comes from the same site, or an unknown site, is untrustworthy. Software with a corporate brand, such as Adobe Flash Player, must come directly from the developer's website. No intermediary is acceptable, and don’t trust links unless you know how to parse them. Any file that is automatically downloaded from the web, without your having requested it, should go straight into the Trash. A web page that tells you that your computer has a “virus,” or that anything else is wrong with it, is a scam.
In OS X 10.7.5 or later, downloaded applications and Installer packages that have not been digitally signed by a developer registered with Apple are blocked from loading by default. The block can be overridden, but think carefully before you do so.
Because of recurring security issues in Java, it’s best to disable it in your web browsers, if it’s installed. Few websites have Java content nowadays, so you won’t be missing much. This action is mandatory if you’re running any version of OS X older than 10.6.8 with the latest Java update. Note: Java has nothing to do with JavaScript, despite the similar names. Don't install Java unless you're sure you need it. Most people don't.
5. Don't fill up your boot volume. A common mistake is adding more and more large files to your home folder until you start to get warnings that you're out of space, which may be followed in short order by a boot failure. This is more prone to happen on the newer Macs that come with an internal SSD instead of the traditional hard drive. The drive can be very nearly full before you become aware of the problem.
While it's not true that you should or must keep any particular percentage of space free, you should monitor your storage use and make sure you're not in immediate danger of using it up. According to Apple documentation, you need at least 9 GB of free space on the startup volume for normal operation.
If storage space is running low, use a tool such as OmniDiskSweeper to explore the volume and find out what's taking up the most space. Move seldom-used large files to secondary storage.
6. Relax, don’t do it. Besides the above, no routine maintenance is necessary or beneficial for the vast majority of users; specifically not “cleaning caches,” “zapping the PRAM,” "resetting the SMC," “rebuilding the directory,” "defragmenting the drive," “running periodic scripts,” “dumping logs,” "deleting temp files," “scanning for viruses,” "purging memory," "checking for bad blocks," "testing the hardware," or “repairing permissions.” Such measures are either completely pointless or are useful only for solving problems, not for prevention.
Let go of the Windows mentality that every computer needs regular downtime maintenance such as "defragging" and "registry cleaning." Those concepts do not apply to the Mac platform. The machine should not be a focus of your attention. You shouldn't have to think about it at all. It should be a transparent, almost unnoticeable tool by means of which you communicate, work, and play. If you want a computer that depends on you to keep going, use a PC.
The very height of futility is running an expensive third-party application called “Disk Warrior” when nothing is wrong, or even when something is wrong and you have backups, which you must have. Disk Warrior is a data-salvage tool, not a maintenance tool, and you will never need it if your backups are adequate. Don’t waste money on it or anything like it.

What version is compatible for the Mac Powerbook 4G OS system 10.5.8 ?

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