My program is not responding anymore.

[de.lesse]

I have written a logger in vb.net 2005 that writes to a mysql database.
Every 15 seconds 8 records. (it takes 7 seconds to read sensors and write this in mysql)

Now the problem is that the application always freezes after a period of time. Sometimes 5 minutes, sometimes 5 days. Even when i take the pc remotely over, the application suddenly stops working (and don't write anymore to the sql). It's very strange and can't find a solution. For logging stuff is this really a pain in...

I have on a webserver a checkpage running so it verifies the sql database if my application is doing something or not. and even send me a mail if not running.

All software is now running on complete other hardware and it gives me the same problem. [:(!]

Can someone tell me what i'm doing wrong? or give me a hint to search in a kind direction?

Thanks.