Syncing disks takes forever

[Leslie Jensen]

I often experience long shutdown times on my laptop due to the syncing 
of disks. Usually I just leave it and the pc will shutdown eventually.
Today I saw a new message that I think is related.

ACPI error cannot release mutex [ECMX] synclevel mismatch:
mutex 1 current 0 20090521 emutex-529
.
.
.
.
.
.
.
Evaluation of query method -Q66 failed AE_.......

PC shutdown so I did not have time to write everything down.

I have a photo of the screen if anyone is interested.


My question is: Can anything be done to minimize the shutdown time or do 
I have to accept it?

Thanks

/Leslie