Quote from BVM88:
hcour
I've found that Avast slows down my internet connection as one of it's 'shields' scans web pages, so maybe have a look at your virus scanner to see if it has such a feature (and disable it as I often do with avast). Some people also put their temporary internet file folder in ramdisk, but I'm not sure if they get any improvement from it.
Good luck
Personally, I feel it's a good idea to disable any kind of "real time/background scanning" of anything.... but to have adequate backup, just in case.