After "upgrading" to XP, I have noticed that whenever I process a macro and it breaks with a message asking me to end or debug, no macros will run smoothly from then on. Even closing Excel and starting with a different spreadsheet, the macro will 'break' at various points and ask me to end or enter debug mode. The only thing that fixes it is a re-boot. Task manager shows no instances of Excel still running after Excel is closed. Any Ideas or suggestions? Thanks in advance!