“Undo” feature in Visual Studio 2008 stops working

Question

I\'ll be coding along in Visual Studio 2008, and eventually I make a mistake. I press CTRL - Z to undo and NOTHING HAPPENS. I\'m not talking about anything

Answer 1

If anyone is still following this, Undo disables for me when I try to Ctrl+Shift+Enter to jump to a new line.

I am using VS2008 Pro, WinXP, editing an XSLT file. Resetting keyboard settings does not help. AnkhSVN installed but not in use.