Right -So, what you have is your phone either to automatically download weather, to download facebook updates, twitter perhaps....
Hard use for me is:
1) Windows Live Messenger ALWAYS ON
2) Push mail (as mail arrives) 3 accounts
3) Check facebook 50 times a day
4) you tube at least once a day
5) Twitter updating once every 30 mins
6) Phone calls between 30mins-1 hr a day
7) Weather updating once an hour
Games: Solitare, resco brain games... couple times a day
9) text messages - who knows how many...
I am constantly on my phone -and the battery is not even an issue.
If you're noticing your connecting randomly trying to connect, it's not the ROM - its a setting that you've asked it to do that.
Note: When i turn my connection off: it stays off unit a scheduled "update" that i've set is ready to go.....