After synchronizing a mobile device with a GroupWise mailbox newer mails show a delivery +2 hours later.
A time of mail delivery shows correctly from a web PIM interface, it shows incorrectly on a mobile device only.
Sending new mail from the mobile device shows time correctly in a GroupWise mailbox.
Synchronization via native phone mail client and IMAP4 protocol shows received mails with a correct time.
This affects only newer generation of Symbian UIQ devices.
The fix is included in GMS 2.04 or GMS3.