I´m going to sleep next so sorry for my rather rude output.

From where did you install power kernel? Do you have devel repository enabled?

Looking your powertop output with my ear it screams that something is fck up if it really represent your idle state. btw. it´s always good to run it couple of times to see that you get some pretty constant values.

So to ask obvious questions:
-Did you first remove all widgets from desktops
-Closed all apps
-went offline
-No daemons running (I have batterygraph and it seems to effect very little)
-Acted with powertop as I recommended in my link

(Probably shutting down, removing battery for 10 mins, rebooting and letting it calm down for 5-x minutes, depending on how long tracker runs AND then running powertop couple of times to get idle state value is good way to start debug)

I tried powertop and my statistics are currently following
Total wakeups 531 = IRQ 415 & Timers 116 and CPU is most of time (90%) in sleep C4 and rest of time in C3 and only fraction in couple of others and none in C0
Only additional thing I have running is batterygraph daemon. I have not installed any apps that install tweaked kernel so PR 1.3 official kernel.