I'm on 3, but I notice that I have no signal when in 2.5g mode. A couple of other people here in the office are on O2 and have no signal either.
Is this a local thing or is anyone else affected?
Curious... O2's network is rather known to be flakey, only usually when they do insane promotions like free texting or calling though. Thanks for posting about it.
We'll probably never know what happened. It was definately an O2 problem as I only found out when O2 users in my office complained about not having a signal. It was maybe something to do with the weather. It's been very windy today - maybe a mast fell over?