subversion: Can't Creat Directory error

[David Southwell]

Hi

Using eclipse as an IDE with subclipse on a Ruby on Rails project I am 
getting the error

svn: Can't Create Directory  /long path   :The filename or Extsnion is too 
long

The svn server is on freebsd 6.1 with apache/webdav and the error is reported 
from a win XP x64 client on our local network.

Can onyone please guide me on how to deal with this problem?

Does anyone happen to know where this limitation is likely to be coming from 
and how it might be overcome?

Thanks in advance

David