I discoverd that after installing new nvidia driver I get a lot of video lags even with low quality avi . Is enyone else experiancing this?? couldnt find enything on google

There are some issues with the 280 driver. After I installed it, my system started to shutdown randomly and sometimes threw a BSOD. Rolled back to 275.33 driver and no issues.
Did you have this problem with your previous driver? If not, then better stick with it.

I didnt had eny issue with old driver. Even this doesnt improve eny game's frame rates or enything but stucking videos.
 But  I didnt get the screen of death or eny other issue so far.

There are some issues with the 280 driver. After I installed it, my system started to shutdown randomly and sometimes threw a BSOD. Rolled back to 275.33 driver and no issues.
Did you have this problem with your previous driver? If not, then better stick with it.

I did the exact same. After downloading the 280 drivers I had a random sound loopback/stutter in Cod4 and whole computer freezed up. This started happening few days ago. Today I rolled back to the 275.33 drivers everything is fine so far.
 

well no video laggin here bt kinda hd few crashez on Witcher 2 and Dirt 3 aftr th 280 drvrz :/