Moved this topic to "General discussion" because it isn't really about badly designed stuff.

I think that issue comes up when your hardware is "busy" doing something and doesn't respond in a timely manner. Usually but not always, if you don't "keep clicking on the window" and wait it out, it won't crash. It might also have been Avast making things a bit slower too. Personally, I don't use any antivirus software, on my own machines of course, I don't trust the bastards.

EDIT: Although, on second thought, the disk management stuff should almost never crash because they are so important, specially in middle of a disk operation.

Ps. Ironic thing, I'm very happy with performance of Windows 8.x and Windows Server 2012 R2 which I use. If only they could remove the user interface and put back Aero glass effect back on it, I would almost be happy.

I had DiskPart open in a command prompt to partition a disk, then brought to the foreground the Management Console. That's when the whole damn thing crashed. This is on a Windows 7 x64 machine with fairly recent hardware, all critical updates applied, and just Skype, Avast, and a few other things installed. I have a driver called Ext2Fsd installed too, but I doubt this was the culprit because I don't have it set up to run upon boot. Anyway, you'd think that Microsoft's admin tools would be more reliable, considering that it's a vital part of the OS. The funny thing is, that when the registry is left alone, and you don't have bad programs crapping all over it, Windows 7 can be pretty reliable. But, you open up the one thing that should never crash, and it crashes in 5 minutes. C'mon MS, you can do better.