Thanks for your advice.
But i known how to check the HD.

For this post,
my point is “AshServ.exe” access “DATA\avast4.mdb” and “DATA\avast4.ini” every second.
Why ??

Monitor by “Filemon”.
http://www.sysinternals.com/ntw2k/utilities.shtml
Does somebady confirm ?? thanks

OS: Win XP sp1 (Big5 version, MutilByte)
HD: WD2000JB (WD 200GB)