tlug: vanishing screen

[WolfgangWalter Sauer <mailto@example.com>]

Dear Groupies, 
some days ago my screen vanished into horizontal stripes while working in xvwm95. It starts with a few muti-colored
stripes, but the number increases rapidly and at a few seconds later there're just stripes left and the pc doesn't
accept any keybord- or mouse command. After rebooting ( and the usual hdd-check)I got the same problem again, but when I
tried it once more some hours later I was able to work in the grafical environment without any problem. 
Can anybody give me a clue?
Thank you!
 wowasa

hardware-configuration: 
TopGun mainboard
Cyrix 6x86 CPU
V7 Mirage P64V (S3 968) grafics board, 2MB DRAM


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