Are you running any add-ons that might change the appearance of the page, e.g., add-ons that block ads, Flash, scripts, etc.?

Sometimes you notice glitches in Firefox related to graphics card driver incompatibilities. To rule that out, you could disable hardware graphics acceleration. You usually need to restart Firefox in order for this to take effect, so save all work first (e.g., mail you are composing, online documents you're editing, etc.).

orange Firefox button or classic Tools menu > Options > Advanced

On the "General" mini-tab, uncheck the box for "Use hardware acceleration when available"

After restarting Firefox, do you notice any difference?

You can check for problems with the localstore.rdf file.

• http://kb.mozillazine.org/Corrupt_localstore.rdf

I have adblock plus. I disabled it and there was no change. I unchecked the "use hardware acceleration when available" and restarted Firefox. Still no change.

Followed the instructions. Did not fix

Did not help

Can the problem be seen without logging in? If so, can you post a URL to a page demonstrating the problem?

Create a new profile as a test to check if your current profile is causing the problems.

See "Creating a profile":

• https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
• http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues

If the new profile works then you can transfer some files from an existing profile to the new profile, but be careful not to copy corrupted files.

• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Here is the url for a screenshot on my photobucket page. This is how it looks on my computer now.

http://s1148.beta.photobucket.com/user/larjoranj/media/volchat_zps186ea986.jpg.html

here is the url for the website

http://mbd.scout.com/mb.aspx?s=7&f=1372

I'm going to try creating a new profile

Created a new profile. Followed the instructions and only transferred the files and folders listed in the instructions. Still same problem.

Created a 3rd profile and didn't transfer anything. Just started over. Same result on that site.

I have Chrome and IE installed on this computer also and I don't have this problem with either. I guess I'll just start using Chrome

Make sure that you aren't blocking JavaScript.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

• Do NOT click the Reset button on the Safe mode start window or otherwise make changes.

• https://support.mozilla.org/kb/Safe+Mode
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

There's definitely something odd about that forum (viewed on 18.0.2). If I tap the F11 key twice to toggle full screen mode and then back to normal, the page resizes immediately.

Wait a second... after poking around in it for half an hour the problem went away. I wonder whether they are experimenting with the layout on the site?