I have seen this error many times in different location which was common, i used to had that error. Typically, while trying to close windows of winxp/2k3/2k etc NT platform PCs it'll pops up and saids rundll32.exe not responding and requre u to end it manually, and there are some program won't work when once this sympthom happends, when double click on certain program, your mouse will look like working, but when u wait a long time it still don't come up, it's like nothing happend, but when end the rundll32.exe, the double clicked program appears. Had anyone seen this before? there is nothing i can do to fix it except format lol