Did you have a restore point created before the updates were installed? To check click the Start button and type System Restore and click the Enter key. Choose Next, and the list of Restore points will appear. You might want to choose the restore point
created immediately before the Windows Updates were applied. Then you can use Windows Update and install the patches one-by-one to narrow down the cause of the problem.
However, I don't see that any patches were released around May 3. The patches for May will be released on May 11. The ones that were released in April don't seem to address Windows DVD maker either. Here's some information on the patches:
http://www.microsoft.com/technet/security/bulletin/ms10-apr.mspx.
Barbara