Serious problems with this ROM (2.2.0) - please read
I've been using this ROM (2.2.0) pretty much since it was released, and previous version before that. Everything was working fine for me - until this past week.
I would now suggest to people: do not use this ROM (version 2.2.0)
I've been using my phone for an internet connection while traveling, both USB tethered and Wi-Fi hotspot. About a week ago I started having issues with it shutting off during internet use (more so USB tethering) for no reason. I would boot up again and it would work fine.
As the days went by it started happening more often, until finally, something "broke" and I was no longer able to boot up my phone unless there was no SIM card or it was in airplane mode. If I booted up in airplane mode, things worked fine, but as soon as I turned on the phone radio (3G or GSM) it simply shut off.
I tried restoring to a previous ROM and had the same issue. I've now reverted stock ROM 2.1 (factory restored) and now the phone works, but the Wi-Fi doesn't work (when I try to turn on Wi-Fi I get an error "unable to start"). Restoring with SEUS or PC Companion is not possible as both say I already have the latest version of the software (I believe Sony has changed this recently. No "force repair" option.)
I believe the problem may be related to a power issue, but even that doesn't fully explain it.
If you want to know more about the problem I'm having or think you can contribute to helping me fix it (namely the wi-fi problem at this point) please see this thread
My reason for posting here is to make everyone aware. Another user replied to my thread having had similar problems. Knowing what I know now, I would no longer use this ROM - or at least not use it if for extensive internet tethering or wi-fi hotspot.