When I visit the stackoverflow.com home page everything seems to work correctly. In particular:
when I use the mouse to hover over my userid on the top line of the page a popup showing reputation activity over the last day is displayed
My two favourite tags, "Java" and "Swing" are displayed
the "Java" questions are highlighted with the orangey background
However, when I click on the "Java" favourite tag to filter the questions I notice some problems:
hovering over my userid on the top line of the page no longer displays the "reputation popup".
tags related to "Swing" are not highlighted with the orangey background color
Additionally, when I look at a question that includes posted code, the code is not formatted. That is the code is displayed in a separate text area, but all the code is left justified. The code indentation is missing. This is the biggest problem for me as I find reading unformatted code to be very confusing.
Note, I just returned to using Stack Overflow 5 days ago and the site was working correctly. It has only been the last 2 or 3 days that these problems started happening.
I use IE 9 on Windows 7.
I have closed all IE windows and deleted all files from the cache to make sure I am picking up the most recent JS files.
Any ideas on what could be causing this or how to fix this?
Here is how I see code that is included with a question: