Also started getting this problem, funnily enough on the 10th of April too.
I thought it was isolated until the crashes have become more and more common each day.
I've noticed windows update will hang about 20 seconds after authenticating at logon, I've know idea why as I've done nothing to affect my automatic updates at all.
My error logs also show the following:
The COM+ Event System detected a bad return code during its internal processing. HRESULT was 8001010D from line 44 of d:\qxp_slp\com\com1x\src\event s\tier1\eventsystemobj.cpp. Please contact Microsoft Product Support Services to report this error.
Failed extract of third-party root list from auto update cab at: with error: The data is invalid
About 20 times a day, followed by several crashes.