When I arrive at work, at 10-ish, I cannot check email on my phone. It will time-out repeatedly as I try to connect to the server. Web works slowly at best.
After 4:30, it's the same.
During the day, it works just fine, which would tend to indicate that there's nothing wrong with the phone, the software, or the servers (which are Gmail-based, and thus not on UK time in the first place).
Which means the problem is that Orange's internet access is _shit_.
As soon as the N96 comes out I'm running away to O2.