thx for your answer kwizard.
i've reinstall fedora 3 times, and the same problem happens....
i didn't had this kind of problems on nvidia card since this one and i have 3 others configurations with nvidia card on fedora: 460gtx, 9600M GS, nforce working lije a charm....
I've installed the driver 295.20 driver from nvidia website and it works great know!
so i'm sure that's a problem with 290.10 version of the driver....
you should take a see to this thread too:
http://www.nvnews.net/vbulletin/showthread.php?t=168305
i really think it would be necessary to upgrade rpmfusion driver............
thx