Recently my copy of NOD32 has been crashing various instances of
svchost.exe. In particular, it seems most fond of crashing the User Profile
Service, the Group Policy Client Service, and the Background Intelligent
Transfer Service. I have discovered through some savvy debugging that the
cause is NOD32's IMON Internet Monitoring Module. I have reported the issue
to both Eset (although, NOD32 v2.7 is deprecated so it's unlikely they will
do anything) and Microsoft (It's also likely they won't do anything, they'll
probably just blame Eset and tell you to ask them to fix it), and in the
meantime I have come up with a temporary work-around for anyone else who may
be experiencing the issue.

Open up the NOD32 Control Center, and click on "IMON" under "Threat
Protection Modules". Click on "Setup", and go to the "Miscellaneous" tab.
Click the "Edit..." but next to the "Exclusion" feature explanation. Click
the "Add" button on the bottom left hand side of the dialog that appears,
and add %SYSTEMROOT%\system32\svchost.exe (which for me resolves to
"C:\Windows\System32\svchost.exe"). Click on the "Ok" buttons until you are
back to the NOD32 Control Center.