We are experiencing some the same problem on two seperate NW6.5SP3 & BM3.8
SP3 + IR1 servers. People are having problems downloading some .EXE files
from various websites on the local intranet and internet. No error comes
up but the download sites at 0%. Like Ive tested in on my own web server
where is have alot of .exe files. I have no problems downloading
directx9.exe, sdat4390.exe etc but trying to download acrobatreader7.exe
or winzip9.exe sits at 0%. Its not rule based as Ive added any allow at
the very top to that website.

Any ideas?