CorelDraw X5 Closes When Restore Down Button is Pressed

I've got this weird thing going with CorelDraw X5 after applying the SP2 patch. When I click the Restore Down Button (in-between the Minimize and Close button in the top right hand corner of the application window) on a fully maximized CorelDraw X5 instance, the program closes instantly. This does not happen in Photo-Paint X5. Has anyone else experienced this? I'm running Windows XP SP3 with all the latest patches. Weird. Just plain weird.

Thanks,

Rich