647082 - midas.com - server serves wrong MIME type with new UA string format (broken sniffing) in Gecko 2+/Firefox 4

Status: RESOLVED WORKSFORME

(Web Compatibility :: Site Reports, defect)

Description

[Kathy]

User-Agent:       Mozilla/5.0 (Windows NT 5.1; rv:2.0) Gecko/20100101 Firefox/4.0
Build Identifier: Mozilla/5.0 (Windows NT 5.1; rv:2.0) Gecko/20100101 Firefox/4.0

When I go to Midas Auto Repair's website to find a store nearest me, I put my home zip code in the store address locator box as indicated and Firefox 4.0 attempts to download a .aspx file instead. I used this Midas website with the previous version of Firefox and with IE and had no problems, it only does it when I use Firefox 4.0

Reproducible: Always

Steps to Reproduce:
1.Go to www.midas.com
2.Enter a zipcode in either of the 2 boxes offered to find a store near you

Actual Results:  
A box for a download of home.aspx file pops up 

Expected Results:  
A Midas Auto Repair webpage should open up showing me locations near my zipcode -- IE and older versions of FireFox work fine but Firefox 4.0 won't allow it to work

Comment 1

[Matthias Versen [:Matti]]

www.midas.com times out for me.

Comment 2

[Tim (fmdeveloper)]

Can confirm issue on Mozilla/5.0 (Windows NT 5.1; rv:2.2a1pre) Gecko/20110401 Firefox/4.2a1pre ID:20110401030438

Issue does NOT occur on Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.16) Gecko/20110319 Firefox/3.6.16 ID:20110319135224

Comment 3

[Tim (fmdeveloper)]

Attachment: Result of aspx file sent to browser

Looks like it might by a User Agent sniffing error - didn't confirm as user agent switcher is not currently compatible with Minefield.

TE?

Comment 4

[Matthias Versen [:Matti]]

I still get a timeout and http://web-sniffer.net seems to have the same problem.
I expect bad browser sniffing because the UA doesn't contain the (windows) anymore.

Tim: You don't need the UA sniffer. Just create "general.useragent.override" and use the FF3 UA as value.

Comment 5

[Tim (fmdeveloper)]

Works if I spoof to Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.16) Gecko/20110319 Firefox/3.6.16

Marking as a TE bug