[Samba] The meaning of NT_STATUS_OBJECT_NAME_COLLISION

[samba at enduringresults.com]

Two questions:-
1. What is the meaning of the following from my Samba logs?
2. What can I do to correct whatever is the problem?
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[2008/12/27 15:54:13,  2] smbd/open.c:open_directory(2157)
  open_directory: unable to create firefox/Profiles/askiowsk.newsmb. 
Error was NT_STATUS_OBJECT_NAME_COLLISION
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I'm running Samba 3.0.33: the default and fully updated version on 
Fedora 10.
As far as I can tell everything is working just fine. I am however 
getting very frequent error messages like the above while running 
Firefox (both 3.0.5  and 2.0.18) using a profile in a Samba share.
I don't think it can be the profile that's the problem because 
firefox/Profiles/askiowsk.newsmb is a new profile. I made just now to 
test these error messages.

Many thanks,
Philip Pawley