MSAS causes 100%cpu usage spike every 12 seconds???

[David]

I encountered a problem this morning. Worked fine for a
couple months until now. This morning started getting
continuous 50% CPU utilization (max on one processor) for
gcasDtServ.exe at startup. Problem goes away when task
is cancelled.
System:
Microsoft Windows XP
Media Center Edition
Version 2002
Service Pack 2

Sony Electronics, Inc.
VAIO Computer Intel
Pentium 4 CPU 3.40 GHz, 1 GB RAM, 250 GB Hard drive

Also running Norton Internet Security 2005, Spybot SD.
Ethernet connection to 2Wire DSL modem.

 

[Andre Da Costa]

What you could try doing first is disable Microsoft AntiSpyware from the
Notification Area (right click the icon and click Shutdown Microsoft
AntiSpyware). Navigate to c:\program files\Microsoft AntiSpyware and delete
the error log. Go to Ad\Remove Programs (Control Panel) and the uninstall
Microsoft AntiSpware restart the system then install back MSAS.