I'm not smart enough to get my head around all the event logs posted here, but my battery was being drained by a faulty wireless router last year. I replaced the router and battery life returned to normal.

This got me thinking about the impact of wifi on battery life. After monitoring my data use for a few months, I realised that I was unlikely to exceed my 1 gig allowance anyway so I now keep wifi turned off except for specific circumstances (need more speed, big download, etc.). Running two radios instead of just one obviously uses more power. Lately, I get about two days from my battery.