Thanks for the attention, Bill.
I have a 30 Gb HDD, divided into two partitions: big NTFS disk C:\ and a
very small FAT32 D:\ (original copy of Windows from Fujitsu, instead of
recovery CD). I'm checking the disks once a month or two, and
defragmenting C:\ as well. I run checkdisk once more - it found nothing
to fix.
Scan results:
McAfee full scan - OK.
Ad-Aware full scan - OK.
MSAS full scan - (was) OK.
WD quick scan - OK.
WD full scan in safe mode (F8) - OK.
WD full or custom scan (with or without advanced options) - completely
unpredictable results. Sometimes it works, sometimes not. Last time Full
Scan process stops at my own jpeg-file in "My Documents" directory and
hung up. But most of all it "likes" sendfile.exe
It takes no CPU time if it hung up, it is just not working. When I
"close" WD (Alt-F4) and restart it again it is still scanning
sendfile.exe When I "exit" WD (via it's menu) and restart it again, it
reports that "No unwanted or harmful software detected. Your computer is
running normally".
I have no ideas!