[net.micro.mac] Vertical bar-CRASH...

harrow@exodus.DEC (Jeff Harrow, NCSE LKG1-3/F16 DTN=226-7445) (04/25/86)

I am getting  an  odd  crash and would like to find out if anyone 
else has seen these symptoms:

Often, but for  no predictable reason, the Mac will freeze with a 
3/4 inch vertical bar  from  top  to bottom of the screen.  It is 
not a solid bar, but  appears  to be a visual rendition of random 
memory (and in fact, I once could see most of an odd icon in it).

This is usually accompanied by a  buzzing  noise from the speaker 
and, occasionaly, by a flickering and empty dialog box.  The only 
way  out  is  by  the  RESET switch, the  INTERRUPT  switch  does 
nothing.

I am running a 512K "normal" Mac with HD20, System  3.1.1, FInder 
5.2, and the newer version  (Dec)  of the Hard Disk Startup file.  
(This occurs both in the finder and in applications).

I'm  running  a very large system  with  most  of  the  "goodies" 
distributed over the net (WatchCursor, AutoCursor, Reg Box, etc.) 
and lots of installed fonts.

This is getting old; can anyone shed some light on it?

Thanks,

Jeff