Bugzilla rejecting attachments

[Patrick Luby]

Hello,

Today I have been looking at bugs at when I am no longer able to add an 
attachment to a bug. I'm trying to add a simple text file and I when I 
submit, I get the following error message:

"The file you are trying to attach is empty, does not exist, or you 
don't have permission to read it."

Perms are 644 and I have cat'd the file to multiple different folders 
and tried uploading using both Safari and Firefox and all attempts fail.

Is anyone else seeing this problem?

Patrick