8823 - Debugger Problems

Has anyone else experienced any problems with stepping through code in the debugger?

We had a case this morning where code was effectively not being executed when stepped through in the debugger (even though we stepped through it using F8), but if we set a breakpoint on the line after the code we were interested in, then the code worked as expected.

We re-ran the debugger several times and always experienced the same odd behavior.