Import Error - File Already Locked in WA

System

I have a scenario that is just baffling me. I am trying to Import some files into a workarea. The workarea has one file in it (.DS_Store), which is marked as modified and unlocked. There are no other files in the workarea. There are no files in STAGING. When I execute the Import I get a pop-up stating:

Error importing file foo.bar to TeamSite server:
File is already locked in workarea integration by nmbsde

Where nmbsde is a valid user on the system. Problem is, that file doesn't exist at all in the workarea and when I list locked files, it shows no files are locked. This is really frustrating. It's repeatable. Any idea why this might be happening?

TeamSite 6.1 SP2
Solaris