sparse bundle slowness

[astrodog]

Safe boot - can't connect to the NAS at all....
So a basic lion install on a FW drive can open/close these large sparsebundles without delay, and my main account on internal drive takes 2-3 minutes to do either....
An error I noted in console, which appeared at the end of the pause, as the image mounted:

Apr 12 21:51:56 xxx-MacBook-Pro fseventsd[40]: event logs in /Volumes/FW800-backup/.fseventsd out of sync with volume. destroying old logs. (560 1 850)
Apr 12 21:52:00 xxx-MacBook-Pro fseventsd[40]: log dir: /Volumes/FW800-backup/.fseventsd getting new uuid: 04C3AC65-EF65-4F4E-8EE9-62FED2737EEA

Any ideas?
I've also disabled time machine and spotlight with no change.....