If you reflashed, you have a hardware problem.

I assume since you read the 15 threads you already tried the sim clean, the paper trick, the board twist, installed syslog and tracked the issue, you know, all the steps in the said threads?

There is nothing in Maemo that trigger the error. It is a message that is typically put up by the OS when communication with the GSM modem fails. syslog will make more sense of it, but I'll go ahead and assume you have a hardware issue, most likely you twisted or bent the board or dropped the device and the modem is dead.

So, Nokia Care Centre?