I have been using AIDA64 for the last 3-4 months and I've not had any trouble with it. None just having it installed, none starting it up and none while stress testing the components. Were you using a fairly recent release?
Just checked the site because mine has been bugging me for an update for awhile, and it looks like the new version(2.60.2100) adds support for some GeForce GTX video cards, such as the 650, 660. The problem Ganjiry was experiencing might have been some bug with fairly new hardware, SLI, etc.....may or may not have been fixed with the new update. Who knows