Hi KLU,
Thanks for opening a case with Symantec Technical Support about this. I checked the status just this morning. As developments occur, the case owner will be in touch with you directly.
For the benefit of other forum participants: the issue is currently under investigation by Symantec developers. The error has been reproduced, but only seems to happen when wireless liveupdate is run over the 3G connection. Updates that were conencted over WLAN (wifi) connections on the same phone worked fine. Also, tests with other phones and local 3G providers showed Symantec Mobile Security updates working successfully.
Thanks and best regards,
Mick