Your Garmin help, please

I've got a Forerunner 210, which I bought just before xmas. On friday I ran home from work, but when I plugged the garmin in to my computer it made some extravagant beeping noises and deleted all the history and all the settings. Really annoying. I went for another run today and when I finished I checked that it was saved in the watch history, but when I plugged it in, again no sodding history.

Any suggestions on what I could try? Other than calling Garmin?

Update: after the piece of shit deleted yet another activity today I called Garmin and they said if I send this one back they'll send me a new one.

Anyone want to lend me a running watch for the next fortnight? I've got a race that I would actually like to know my pace for.