Problems with Attachments

[Henry Blackman]

Hello.

I wonder if anyone else has had problems with attachments as I have.  I'm 
using the tarball of IMP/Horde, and Apache 1.3.22 and PHP 4.1.1 on FreeBSD 4.3.

Sometimes (I'd say about 40% of the time), when downloading an attachment in 
IE 6 (on Windows XP) the save file requester pops up I click "Save" and that's 
that... it just sits there.  I can replicate this issue on several different 
computers, so it's not my browser; and with several different attachments.  I 
had first thought that it was spaces in the filename causing the problem, but 
I've patching IMP to remove spaces and I still have the same problem.  

Anyone got any clues, or found this behaviour?

Cheers,
Henry