system
4
susiar,
Avast is very stable with Windows 98. I have not installed WinSP2 and have no intention of doing so.
I have installed 3rd party vendor protections in the way of firewalls, antivirus, script blockers, popup and ad blockers, process guards and such…instead of SP2.
Some users feel more dependent on Microsoft than I do.
The main thing is to cover all the bases in system protection.
But, Avast will work with SP2 just dandy.
Good luck.