I am facing a problem in my nokia 6600 phone...

when i sent an sms to any number, it goes to Outbox and show me a message e.g. Resend 3:08

i clk on resend to send the message again, but it shows an error message after clicking 2 or 3 times. i.e.

"General memory full"

My memory card is all free of space and all the applications are closed. Then why i receive this message i.e. general memory full. Please help.