I often find that when i get avast to scan my computer c drive (not a boot time scan) after a while my computer goes quite slow. For example, if i minimize a programme, it takes a few seconds to do this etc. I don`t have this trouble with online scanners or when I used to use AVG.
Why does this happen? Also avast scans take up to 1hr to finish on my computer, online scans seem to take pehaps 25-30 mins.
Can anything be done to speed up the scan times?
I am using XP home edition, SP2. I`m using avast home edition.