@Ol!ver, thanks for your input over at the google forums on this issue, much appreciated, btw, just for information, i'm the one who started the google thread, (fizzydx)
EDIT> I think i've found a workaround that solves this issue for now, or untill google can fix it, i haven't posted this over at the google forum because i think this issue going to be more widespread as the 2.3.3 update rolls out, also google needs to fix this pronto, i hope it helps.
After the update to 2.3.3 i noticed my APN settings had changed, i used to have two APN's for the T-Mobile UK network, one for mms and one for the internet, after the update i still had two APN's listed, but they where for two different networks, T-Mobile UK & Virgin Mobile, each of these APN's where combined internet & mms, so what i did was delete all APN's and created two new ones for T-Mobile only. listed below you will see both APN settings, before and after, the after one (the one i created) seems to work perfectly, so it seems we can't use a single combined APN, obviously you will need to find the APN settings for your network in the same format as the "AFTER" settings listed below, but google still need to fix this issue as a lot of people won't know how to fix it them selves.
BEFORE
Name > T-Mobile UK
APN > general.t-mobile.uk
Username > t-mobile
Password > tm
MMSC >
http://mmsc.t-mobile.co.uk:8002
MMS proxy > 149.254.201.135
MMS port > 8080
APN type > default,supl,mms
AFTER
Name > T-Mobile Internet
APN > general.t-mobile.uk
Username > t-mobile
Password > tm
APN type > default < i tried putting "default,supl" here but the problem came back so i used "default" only
Name > T-Mobile MMS
APN > general.t-mobile.uk
Username > t-mobile
Password > tm
MMSC >
http://mmsc.t-mobile.co.uk:8002
MMS proxy > 149.254.201.135
MMS port > 8080
APN type > mms
BTW, do you have any idea what the "supl" is used for, i've read that it is for A-GPS, but A-GPS seems to work but i'm not to shure, would it be possible for you test A-GPS after changing their APN settings to not include "supl".