Cannot install utorrent after clicking download now can only save file

[eemmfa]

I'm using Firefox 3.6 (just updated) on Windows Vista laptop.

When I click on "Download now" -- to download uTorrent, I am not given the "Run" option so that I can install the program. I am only given "Save File" and "Cancel".

When I click Save File, the download cancels itself and fails.

I have downloaded uTorrent on another computer using the same browser and OS and did not have this problem.

I have completely reset the download settings for Firefox using about:config and I have no restrictions on downloads under Options. I am thinking that there is an issue with the PC itself rather than the browser.

I also do not have any firewalls or anti-virus programs installed.

If you know anything that would help, let me know. Thanks!