Hi Ahmed, qwerty12 is correct. MyNokia as it stands right at the moment is effectively malware / spyware. Nokia dropped the ball a little bit on this one.

Upon update or flashing of PR1.2 firmware MyNokia (also known by its package name of 'cherry') forces you to send an SMS to nokia giving away your IMSI / Phone number, maybe the IMEI, and probably some other key bits of private information. (You can circumvent this, described elsewhere in the forum)

Some people don't care about this, others do. YMMV.