Hi there!
Lately I have been discovering this new error, which frankly is quite unnoticeable to the bare eye..

Everything's working as intended, except to receive and send out text messages & calls..
When I try to send a text message the "[" Icon (though horizontally) and with an arrow pointing up shows and it keeps saying waiting and the text message is never sent out(until I restart the device) and same goes for calls.
At first I thought it might be the Sim-card so I turned off my Nokia and picked it apart and viola it worked again! But when it happened again I just restarted it and it worked. So I jumped to the conclusion that it wasn't the Sim-card.
The N900 is just about a month or two old and in perfect shape(except this error of course

)
So anyone else experiencing the same problem or having a theory what it might be? It's really annoying, since I don't know when it occurs and then when people try to contact me they fail.
I'd guess this happens once a week or something like that.
I'm also gonna try contact the Nokia company, but please give me your thoughts!!
Thanks in advance!