O2's UK network hung up, just like the Parliament -- were you affected? (Updated with O2's response)

So word has it that O2's network's been a bit dodgy in some parts of the UK this evening. Did Gordon Brown's resignation cause such an outage? Did all the texts about David Cameron's shiny forehead lead to this network overload? We don't know, but our own phone's been running just fine all evening in Central London. Anyhow, let us know if you were affected -- just don't say it was Nick Clegg's fault.

[Thanks to everyone who sent this in]

Update: O2's released a statement about the regional outage:
"We currently have a fault on our network which is affecting voice and data service across parts of the Midlands, South West and Northern Ireland. We are very sorry for the inconvenience. Our engineers are on site to fix the fault as soon as possible."
This certainly matches what we're seeing on Elliott Kember's crowdsourced map, too. [Thanks, danWebb and Scump]%Poll-46230%