Scanning time + false positive?

[argus tuft]

Hi, I installed avast home edition yesterday, so far quite impressed :-)
 I ran a thorough scan, about 100GB of data, and it took about 4 hours, is this normal? My pc is a P4 (hyper threaded) 3.2Ghz with 1GB of ram, winxp home sp2.
 Other active protection: spybot's teatimer, and spyware terminator.

 As to the second part of my question, when I looked in the chest, there were 3 system files, kernel32.dll, winsock.dll, and wsock32.dll, none of which were infected when I scanned them individually. I was wondering whether these were replaced by avast as part of the shields? If not, I guess I restore them.
 Thanks in advance, argus

[Marc57]

Hey argus tuft, Welcome to the forums.

For 100 GB of data, that's not bad since that was your initial scan. To speed things up from now on I would suggest running the standard scan instead of a thorough one unless the standard scan finds something.

The files you found in the chest are copies put there by Avast in case a virus would damage the original ones, so you can just leave them there.

[argus tuft]

Thanks marc57

[Marc57]

No problem, Glad to help. 

[DavidR]

As to the second part of my question, when I looked in the chest, there were 3 system files, kernel32.dll, winsock.dll, and wsock32.dll, none of which were infected when I scanned them individually.

You will notice the avast chest is in three sections:
1. Infected Files, speaks for itself, any files detected by avast that you chose Move to Chest as the action.
2. System files, back-up copies of important system files, where you found those you mentioned.
3. User Files, an area for the user to import suspicious files that haven't been detected so they can do no harm and can be sent by email to Alwil for further analysis.

The other All Chest Files isn't a section in its own right just a collation of all of the other three, personally I feel this should be removed as people could think possibly as you did that the system file back-ups were infected.

Welcome to the forums.