Urgent: WIA Driver let my computer slow down!

Dear all,

I write a WIA micro driver for our MFP Scanner.After I install it,
the My Computer window cannot open,all I get is flashlight indicating
"Searching for items...". And I find in Knowledge Base 819017,MS provide
some solutions that are stop WIA service or unplug the device. But this
cannot solve the real problem.

So,my question is how to sovle this problem in my WIA micro driver?

Thanks in advance!

Horky