11-29-2008 01:47 PM
Options->SMS Text->Leave messages on SIM card = YES ---- should work.
If it does not work properly try to use the following strategies (backup your sensitive data before):
1. Wipe the device memory via: Options-Security Options-General Settings,menu: "Wipe handheld"
2. Re-install/upgrade your handheld OS. There is an utility to wipe the device and prepare it for new OS. And there is link to RIM OS upgrade resource.