We have a filereference upload set up and working uploading to a PHP script
on an apache server.
It's a multiple upload script with FileReferenceList and a PHP script that
moves the files and inserts to database.

The file upload works well using Win XP (IE, Firefox, Opera).

On the Mac (safari, Mozilla), we get IOErrors, the files won't upload. There
is no authentication necessary, nor are there any restrictions for filenames
etc. as the documentation suggests.

We're not starting sessions, as we got
errors that way, too. We tried on several machines all with latest flash
player installed, it works on the PC, doesn't on the mac.
We tried on two different servers, I even removed all PHP code from the
upload script just to make sure it's not a server-side problem, so obviously
there is something awkward happening on the Mac.

  Plz check it and let me know