I just compiled 2.6.11 from a 2.6.10 configuration for a desktop machine 
(with kernel preemption activated).
Doing a make oldconfig bring some new options. I selected the default 
value (for my system) for them, so I keep configuring "make great kernel 
lock preemtive" to true (complete kernel configuration follows).

Apart from the ALPS touchpad thing (see "2.6.11: touchpad 
unresponsive"), the new kernel keeps:

    - Setting randomly "last battery full charge" to a huge value 
(example: 400 Ah when max battery capacity is 38 Ah) so I get random 
charging/discharging timing patterns
    - Locking "softly" the system: for example, preventing new proceses 
from spawning. For example, if I suspend the laptop while in Xwindows, 
resuming will keep X but new proceses can't be started. Changing to a 
virtual console doesn't get past the login step, as a new shell can't be 
started.
    - Disabling/enabling  double-clicks in the synaptic touchpad. Randomly.

All of these symthoms are more or less randomly. As far as I can tell, 
everything is ok before suspending but does Random Nasty Things(tm) 
after coming out from suspension.

Well, at least system clock works better than in 2.6.10.

I will try to deactivate the main kernel lock thingie and see if that helps.