I had a page where I was passing colour info to a script using the standard html numeric scheme - e.g.
pulldown.php?out=#c0c0ff&over=#2020ff&item=#ffffff

but the params were not received by the receiving script
if the hash sign was used.

I do not know if this is a PHP issue or an apache one but what I assume is happening is that something thinks that a reference is being made to an internal anchor.

perhaps urlencoding culd have helped - and I had a workaround so this is not really high priority - 

Dave.