Dell pre-installed Vista Home Premium.
No anti-virus came with this E521 Dell.
About a year ago, I installed AVG 7.5 (free). AVG has worked flawlessly since.
Just recently, AVG slowed way down and I read on AVG screen: ntoskrnl.exe.
The scan then became real slow.
The only software I have installed recently was Mozilla Firefox. I don't think this has anything to do with anything.
Anyway, I uninstalled AVG and installed AVG (7.5 free) and all seems to work OK now.
I have no idea what: ntoskrnl.exe is. Or how it relates to anything AVG.
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