Yes!

Both me and my girlfriend have had the feeling that the battery life has decreased significantly with Lion on our 2010 MacBook Pro's, compared to Snow Leopard. Especially when the machine is "sleeping" (when you just close the lid). Unfortunately, we don't have any numbers to back this up (yet).

I've been trying to determine what the problem could be, but it's a bit tricky due to the sheer amount of variable factors. We're pretty much running the same applications as before, and nothing seems to be out of the ordinary when examining the running processes and hardware utilization. We've both got 8GB or RAM, which should be more than enough for Lion (it doesn't write to scratch).

Suspect an issue affecting the WindowServer process (brief edition for power users)

The symptoms you describe are familiar but not commonplace and in my case, not frequent.

Diagnosis – at the time of the problem, if it recurs

Remotely,

sudo sysdiagnose

After you regain local control, you can analyse the end result.

Remotely,

top -o state

Processes that are stuck should be at or near the top.

Is WindowServer stuck for any length of time?

Workaround

If WindowServer is stuck, you might kill remotely – 

sudo killall WindowServer

– but this will cause a local log out, so be prepared to lose unsaved changes.

This relatively short answer is tuned to the opening poster's confidence with remote ssh and bleeding edge stuff.

For a more detailed answer, accepted under a similar question where the cause of a problem may be different: Suspect an issue affecting the WindowServer process (long edition)