on one computer i keep getting such messages from buffer overflow protection.
i got VirusScan on that machine with valid fresh definitions and scan show nothing
I am quite troubled that could be caused by malware but can't find out how investigate that problem
any help apreciated.
This article is likely most relevant.
Buffer Overflow violations after installing VirusScan Enterprise 8.8 Patch 4
Technical Articles ID: KB81308
That is ideal, yes.
The alternate is to disable the BOP feature (for 32-bit systems; it's already disabled for x64 systems)