Uninstalling and re-installing FF is not the answer - the user profile is retained and re-used for the fresh installation, so any corruption/errors in the profile are going to be maintained. It's always a better bet to create a new profile rather than re-install.

I have seen this issue first hand Terry, it's happened to me on several occasions but I have no idea what causes it. I've been lucky because it generally seems to have fixed itself - eventually. I've previously suspected that the fault lies with the site itself and not with FF but several reported incidences since have muddied the waters. It could easily be that some sites do not like the current FF's rendering engine, or some component thereof.

Is the issue still present with all add-ons disabled? In FF click on Help and select "Restart with Add-ons Disabled".

Sorry Dave hasn't got back to you yet. We've been having a serious issue with the newsletter plug-in and I know he has been flat out trying to fix it - been on it for many hours. I'm sure he will respond once he he manages to get his head above water.

Hang in there mate,

Cheers...Jim

It looks to me that FF isn't loading the CSS files for those pages properly. I know that DCT isn't right, and the comparisons show pretty much the same.

If you go (in FF) to Options>Advanced>Network>Connections(Settings button) what are the settings?

What happens if you reload the page once it has fully loaded the first time?

Are you running the Adblock extension, or any ad blocking software?

Also, what settings are you using for DNS on your router or in Windows?

Terry - By reloading Dave meant: after a page has finished loading, even though it is not displaying properly, have you tried clicking on the reload button at the far end (right) of the address bar?

So you ISP is Charter? And you are using Charter's DNS service. Have you thought of maybe using an alternative such as OpenDNS? You should at least try OpenDNS, it is more secure and generally faster than your ISP.

Go to Control Panel>Network and Sharing Center and from the options in the left hand panel click on Change adapter settings. Right click Local Area Connection and choose Properties. Click on Internet Protocol Version 4 (TCP/IPv4) and then on the Properties button.

Under Preferred DNS server input: 208.67.220.220

Under Alternate DNS server input: 208.67.222.222

Click OK, close out and reboot the machine.

Try that and let us know.

I'm pretty sure that it's the CSS files that aren't loading. My reasoning is that the displayed text isn't formatted correctly and header images are not displayed, which are usually controlled by CSS.

There are several reasons that this can happen, one is when a DNS lookup takes too long, or is incorrect - thus no CSS file. Another issue is when the CSS file is not presented or parsed correctly, which can be a server or local machine issue. I'm ruling out the server as I've had no other complaints and I use Firefox 95% of the time and haven't experienced the issue once.

Windows stores DNS entries to speed things up. If you change DNS settings you always want to flush the cache, which you can do by typing ipconfig /flushdns from an elevated command prompt.

I've had very good luck with Google's DNS servers (and they are easy to remember):
8.8.8.8
and
8.8.4.4

You'll also want to delete the browser's cache