illegal operations

Depends on what you are doing at the time...
If you are starting Windows or Internet Explorer, then see MSKB Q175930

Illegal Operation error can be generally caused when two programs try to use the sme resources on your computer at the same time.
Software could be incorrectly installed
Programs running in the background,such as screen savers,and memory resident virus scanners can cause illegal operation errors
Clicking on details will give more info as to what device or program is causing error

Just a sidebit, www.ontrack.com- they sell a product SystemSuite 3.0 It has a built in windows crash prevention that seems to prevent most illegal ops from occurring, while creating a log that you can use to troubleshoot them in the future.

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