Has anyone looked closely at power consumption and IM?
Taken any network traces to figure out when traffic is tx/rx?

My experience with my N900 so far is that I can stay online on multiple services (skype, sip, gtalk, facebook) for a working day at the office over wifi with some web browsing during the day

However last night the same setup got me to ~5-% battery 7-11pm last night, which is a little worse with little other usage

A few thoughts
* Using 2/3G, if I maintain 4 independent connections to different IM servers each could wakeup at different times
* Each wakeup could cause 3G radio to stay on for a few seconds
* As their unsynchronized power drain could be high
* If there was a way to synchronize usage would be less (alternatives - use single IM, or proxy them via say a XMPP server)

Would be great to trace when the gsm radio is active, and figure out what the most effective changes would be.