Vista - Need help, explorer crashes when opening any folder

Seems to be solved, read last post.

Hi TelefonHonda,
I was wondering if you have Vista Service Pack 1 installed?
Raj

Sorry I forgot to mention a couple of things, yes I have SP1, also folders work fine in safe mode.

Anyways it's late in here, I'll come back tomorrow, good night everyone!

Ok. Since Windows Defender update seems to have messed you up you can try disabling the Windows Defender service and see what happens.

Please view this link: Services
Thanks

EDIT: VIRUS FOUND! Avast! didn't find this one before but now it got VDB updates and it found a virus: C:\Windows\System32\opnkliGw.dll. I tried to repair it but it says file doesn't exist, yet I can see it when I browse to abovementioned folder. Then I tried move to chest, couple of times it said that it can't be moved to chest because it's in use, now it says "no permission" (again roughly translated from Finnish, dunno what it exactly is in English). I'm a bit scared to delete it, as it may just pwn my system, considering that it is in system32 folder. So plz advice, what to do, this may just be the reason to my problem, I know there propably are better places to discuss this but since I already have a thread I thought that making another one would be unnecessary. Here's some info about that file:

File name: C:\Windows\System32\opnkliGw.dll
Malware name: Win32:Trojan-gen {Other}
Malware Type: Virus / Worm
VPS version: 080807-0, 07.08.2008 (the one it dl:d today)

I think that this is a new virus, no info about it when googling opnkliGw.dll.

So is it safe to delete it, if not how do I get rid of it?

EDIT2: Now that Avast! found the virus my problem has gone away, but the file is still on my computer. Will I delete it or is it some crucial part of Vista that has to be repaired? Thanks already!

EDIT3: Problem solved, Avast! finally realised that it has permission to the file and moved it to the chest. Also folders don't seem to close anymore. I'm sorry if this was the wrong board to post virus related stuff, and sorry if I wasted your time, I was just freaked out, and usually avast finds every virus I've had so I was pretty positive it wasn't due to a virus. Thanks to rajinisback for helping me out, I'll give you "rep" for helping me out.

So sorry, & thanks.

Hi TelefonHonda,
Apparently that virus was interacting with the windows explorer shell. Good to know it's working ok for you now. Thanks!

only trojan remover can get rid off that probs

Everything is solved, it was a virus, you don't need to post anymore in this thread.