My Navigation App has not been working for a couple of weeks. Everytime I open it it crashes and closes. Did not really bother me until today (in fact completely forgot about). Went to pick my car up from mechanic and completely forgot to take my Tom Tom sat nav. Luckily (or at least so I thought) I had my Tab with me. However, the navigation app on the Tab just kept on crashing.

Does anyone have any ideas how to fix it? It is one of the built in apps I think so don't think it is available in the market (so I can't just uninstall and reinstall).

On a possibly related note my Tab seems to crash and reboot a lot. Like almost as often as once a day.

Also Advanced Task Killer is set to kill tasks every 30 minutes and each time it kills like 8 apps or more without me having even started any apps. Is it a scam to make you think it is doing a lot? Surely Android cannot possibly be randomly opening apps.