Problem with index.php

[#1]

I am not sure if this is the correct place but I have started getting a lot of problems browsing this site using Firefox fully patched.
When I click on one of the links very often I get this popup.
The odd thing is that using IE8 it doesn't seem to happen and the site response is noticeably faster
Edit - just to add IE8 is much faster on thinkbroadband forums

[#2]

I'm not getting the issues you are seeing on FF 3.0.11, think Strat has experienced something similar before though.

[#3]

Seems to be OK this morning - however I am running Windows 8 with Avira - Jim begins to wonder if Kaspersky is doing something 

[#4]

Quote from: Oldjim

.. Jim begins to wonder if Kaspersky is doing something

Does seem to be a recurring theme....

[#5]

Now running Firefox 3.5 beta and it's noticeably faster than the old version - lets see if the problem is fixed

[#6]

I also see this problem sporadically.  Not noticed it since I moved to FF 3.0.10 though.  When it does occur, it seems to be persistent during the session and gets annoying - then as you try to investigate, it just "goes away"

[#7]

After had major problems over the last week I started using IE8 which didn't have a problem.
Today I backed up all the Firefox setting using Mozbackup uninstalled Firefox removing all settings then did a clean install then reloaded history, cookies, passwords etc. but not the general settings and it seems to have sorted the problem. Most odd but touch wood it will remain fixed 

[#8]

I had a similar problem in that very occasionally I would click on a link, and instead of opening it in Firefox, a pop up came up asking if I wanted to open it with Thunderbird ! ?

[#9]

After a bit of trawling - using Google - I have found the problem.
It is due to a corrupted cache - why only on this site I have no idea.
I have now set Firefox to clear the cache on exit and it seems to be solved