I had build 1200 but couldn't open ArcMap anymore. Repaired ArcMap (9.3) and couldnt open 1200 anymore!!! Restored my computer to before I install 1200, and can't open ore reinstall build 900. Freezes on the checking disk space screen. UUUUGGGGHHHH!!! Is there a fix for this issue. I see others have had the same problem!!!