HI was there ever a resolution to this thread as I have this issue on my Froyo'd Samsung Galaxy S.
These are my carrier APN's but if I set the MNC to 02, they do not save, thanks.
Obviously if I leave the MNC at 029 it saves but doesn't work?
Name: Virgin Internet
APN type: default
These are the details for the MMS one:
Name: Virgin MMS
MMSC: had to remove this to get the post through
MMS proxy: 18.104.22.168
MMS port: 8070
APN type: mms