Screensaver error -- help!

One out of every two or three times that I return to my
computer after having the screensaver running, my screen
displays only a full-screen image of consecutive rows of
colored vertical bars. I believe that my mouse is still
working but nothing else--no task manager, no login, no
task bar, etc...I have to restart--multiples of ctl-alt-
del works for this, and after a reboot everything is
normal again. I've ran an antivirus program with updated
definitions and also spyware programs but to no avail. Can
anyone help?
DS

Dont use screensaver

--
Adaware http://www.lavasoft.de
spybot http://security.kolla.de
AVG free antivirus http://www.grisoft.com
Etrust/Vet/CA.online Antivirus scan
http://www3.ca.com/securityadvisor/virusinfo/scan.aspx
Panda online AntiVirus scan http://www.pandasoftware.com/ActiveScan/
Catalog of removal tools (1) http://www.pandasoftware.com/download/utilities/
Catalog of removal tools (2)
http://www3.ca.com/securityadvisor/n...aspx?CID=40387
Blocking Unwanted Parasites with a Hosts file
http://mvps.org/winhelp2002/hosts.htm
links provided as a courtesy, read all instructions on the pages before use
Grateful thanks to the authors/webmasters
_
"DS" wrote in message
...
| One out of every two or three times that I return to my
| computer after having the screensaver running, my screen
| displays only a full-screen image of consecutive rows of
| colored vertical bars. I believe that my mouse is still
| working but nothing else--no task manager, no login, no
| task bar, etc...I have to restart--multiples of ctl-alt-
| del works for this, and after a reboot everything is
| normal again. I've ran an antivirus program with updated
| definitions and also spyware programs but to no avail. Can
| anyone help?
| DS