I recently installed avast on a windows 98se machine.
everything seemed fine until I tried to run solitaire.
the main screen opens but no cards show, only some black dots at the top of the screen.
when I turn avast off it works ok. Why??
Avast is latest version 4.5 home downloaded and installed 2 days ago
Computer is AMD K6-2 550
256MB ram
via mvp3 chipset
ati all in wonder 128 pro (32mb) “piece of crap”
Avast security shield by default set to high
Mutt
Welcome to the forum
What version of avast! are you using and how much processing power does your computer have?
Also, what are your setting for the avast! Standard Shield?
While playing the game, you could try setting your firewall to block all incoming traffic and then
pause the standard sheild. (right click on the a and select pause providers and then select Standard Shield)
If that works, don’t forget to Resume the Standard Shield after you finish playing. 
Hi, please try to run this tool: http://www.wieser-software.com/qualtime/stackne.shtml
Chances are it will help.
Thanks
Vlk