This has just started recently, and seems to happen randomly and also the CPU usage seems to go to 100% every now and then. Also, it appears ESET hates the syswow64 folder, as it's cleaned a lot of things there. But, i just installed a new Nvidia driver, and now it keeps coming up with Nkkdgr.exe and KYVSRQ.exe probably a variant of win32/agent trojan comment: error while cleaning (access denied). Event occured during an attempt to run the file by the application firefox. Clean and delete do nothing. Please help. I'm running vista ultimate x64 4 gigs ram q6600 intel quad 3.2ghz Eset Smart Security version 3.0.650.0 with newest definitions.