I don't know what happened. But several PCs in our school are infected by hbkernel virus, and the thing here is all of the computers were running with deep freeze for more than 2 years without any problems, and never had they've been THAWED. It is really a nuisance because the virus eats up the CPU usage causing others to hang up (ms-office applications, etc) and even changing an ip address takes up to 5 minutes (which means the system is really very busy). Has anybody experienced this? I could say that it's hbkernel.sys, because I saw it under the Run entry for HKLM->Software->Microsoft->Windows->CurrentVersion->Run and doing some research about the virus some websites say that it is some malware or spyware type. We even tried setting the computers in THAWED mode with out network connectivity (to ensure no external connection) and removed the entry from the registry and used ComboFix and SuperAnti Spyware to scan the whole drive. But sad to say, after rebooting and setting it back again to FREEZE mode, the entry came back in the registry. PCSOFT's List Owner's: Bob Wright<[log in to unmask]> Mark Rode<[log in to unmask]>