I wrote a script to see which are the modules loaded.
The module to blame should be one of these....

pcmcia                 41388  0 
pcmcia_core            40980  3 pcmcia,yenta_socket,rsrc_nonstatic
rsrc_nonstatic         14080  1 yenta_socket
yenta_socket           27532  1 

So, what I need you to do is to make a boot with the usual blacklists and then 
load the modules one by one using
sudo modprobe module_name
where module_name each time one of these:
yenta_socket rsrc_nonstatic pcmcia pcmcia_core
Please use this order (or at least make sure pcmcia_core is the last one and 
rsrc_nonstatic after yenta_socket).

So the process is:
* Boot with the blacklists
* You load the first module
* Wait some time (e.g. 10 minutes) to see if it increases the wakeups
* If not, you load the second one, you wait, etc
* When you find the module to blame just let us know here to forward the bug to 
the appropriate place.

I hope the instructions are clear. Good luck :)

-- 
Powertop reports huge number of wakeups under gutsy and drains battery
https://bugs.launchpad.net/bugs/145377
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