Why has my computer started skipping and acting choppy with Lion?

ever since i installed Lion my computer has slowed down. it is very choppy and freezes for a 10 seconds or so. ive never had this problem with any other operation system. also, did they change how to scroll with a mouse in Lion? up is down and down is up! weird!

the supported way will not void any warranty your computer has with apple. the unsupported way will void this warranty since this is a configuration that apple does not "support".
Having said all that, the unsupported amount of 6gb's is a tested amount by a trusted source. For me, I'm running on an unsupported amount of ram of 8gb's which works for me.
here are the specs that owc says. They have a number you can call and helpful videos for installation. This site is proof that you're still able to update the hardware of your mac to get the best performance out of it. Just my two cents.
http://eshop.macsales.com/shop/memory/iMac/Intel_Core_2_Duo_PC2-6400
and of course apple will also sell and install ram too! make an appointment with a "genius" and they'll be able to set you up. This is where the supported and unsupported also would take effect. The apple specialist may or may not install the equivalent of 6gb on your machine, but will bump it up to 4gb, which is still good, just not 6gb.
Hope this helps!

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This is a Microsoft Windows Issue.
From a MS Support Engineer:
"Hi,
·        Is the computer on a domain?
·        Is the issue isolated to only this software or you get the same error message with other software’s as well?
Try the steps below and check if it helps.
Step 1:
Run the software setup file as an administrator and check if it helps.
a. Right click on the setup file of the software that you are trying to install.
b. Select “Run as administrator”.
Step 2:
Temporarily disable the antivirus software running on the computer and check if you are able to install the software.
Disable antivirus software
Warning:
Antivirus software can help protect your computer against viruses and other security threats. In most cases, you shouldn't disable your antivirus software. If you have to temporarily disable it to install other software, you should re-enable it as soon as you're done. If you're connected to the Internet or a network while your antivirus software is disabled, your computer is vulnerable to attacks.
Step 3:
a. Click Start, type "Local Security Policy" (without quotes) and press enter.
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Make sure the iPad and iPhone have different email addresses for iMessage.
Using FaceTime http://support.apple.com/kb/ht4319
Troubleshooting FaceTime http://support.apple.com/kb/TS3367
The Complete Guide to FaceTime + iMessage: Setup, Use, and Troubleshooting
http://tinyurl.com/a7odey8
Troubleshooting FaceTime and iMessage activation
http://support.apple.com/kb/TS4268
Using FaceTime and iMessage behind a firewall
http://support.apple.com/kb/HT4245
iOS: About Messages
http://support.apple.com/kb/HT3529
Set up iMessage
http://www.apple.com/ca/ios/messages/
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http://support.apple.com/kb/TS2755
Setting Up Multiple iOS Devices for iMessage and Facetime
http://macmost.com/setting-up-multiple-ios-devices-for-messages-and-facetime.htm l
FaceTime and iMessage not accepting Apple ID password
http://www.ilounge.com/index.php/articles/comments/facetime-and-imessage-not-acc epting-apple-id-password/
Unable to use FaceTime and iMessage with my apple ID
https://discussions.apple.com/thread/4649373?tstart=90
For non-Apple devices, check out the TextFree app https://itunes.apple.com/us/app/text-free-textfree-sms-real/id399355755?mt=8
 Cheers, Tom

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nerbyad,
Sorry to hear you are having this issue today.
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Let me know...
Wes -

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Why has my computer started skipping and acting choppy with Lion?

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