Dear Sir, I have a problem virus and NOD32 can not remove the problem, what can I do? Twelve days ago I had a HD failure, I purchased a new HD, partitioned and formatted the drives, installed my Windows XP, Office XP, NOD32 and ZoneAlarm on C:\. Then I went to MS Windows Updates and "tried" to update the XP OS! Ten days later I contacted the MS technical department here in Australia and requested their help in upgrading the XP OS, I was greatly surprised when they said it was my virus protection software that was causing the problems with the upgrades and patches! In the fourteen months I have been using Nod32, it has never interfered with XP upgrades but I bowed to the MS technicians and shutdown NOD32 while upgrading Windows XP! It is now the twelfth day since I started upgrading Windows XP and Office XP and I finally got the 30meg security server pack 1! I also collected "eleven" various viruses! Thanks to MS technician instructing me to shut down NOD32!!! One of these viruses was spreading over my HD's partitions! (I have two HD's, one 120Gig and one 20Gig, the first HD is partitioned into six 20Gig partitions, C: to H: and the second HD is I:\) Nod32 removed nine of these viruses but could not remove all the viruses and the only way I could get them off my other partitions was to format those partitions. This virus would not permit me to delete their folders, it also tried to disallow formatting of these partitions and I had to dismount the HD's in DOS before I could format them, (the virus had spread to three partitions, C:\, G:\ and I:\) After formatting those HD's I ran NOD32 and did a full scan of all partitions and files on the system. The only virus left was: C:\WINDOWS\SYSTEM32\DRIVERS\svchost.exe - Win32/Nachi.B worm And NOD32 can not remove this virus! I downloaded and ran Windows-KB833330-ENU, this patch "supposedly" gets rid of this virus but it hasn't removed it from my system. NOD32 still reports: worm Win32/Nachi.B found in operating memory. NOD32 cannot clean this infiltration. No action can be taken on a memory infiltration. Do you know of any way I can remove this virus without formatting my C:\? After all the hassles I've had with updating Windows XP, I don't fancy going through that again. Any helpful advice you can give me on removing this virus would be greatly appreciated. Sincerely, Bill Whiteside Australia.