Do you use any blocking add-ons, e.g., Ad/Flash/Script blockers? One of those might be interfering. (I just played with Craigslist but I don't have a login so I can't get to the screen you're seeing.)

I don't think so. I have permitted cookies, no add ons. Very strange that I used to be able to post and now I can't.

Hi, try a refresh that'll bypass the cache with the Shift key + F5 (or Shift-click on reload) which is the same as clearing your browser cache (Ctrl+F5 for the Internet Exploder). If that doesn't work, then you can try a new firefox profile just to see if it's (your) Firefox-related or maybe an actual problem with the site (maybe starting Firefox in Diagnose Firefox issues using Troubleshoot Mode can be a quicker check).

Please help!! The same thing happened to me where I did the 'shift F5' thing... although NOW the Craigslist page is itty bitty tiny and I can't read it.

Went into 'safe mode' and have NO clue as to how to fix it! ALL the other webpages load correctly and are of correct proportion. Just not THAT page

Deleted the 'Bookmark' cleared the history.. still loads as a tiny illegible page.

@gsplady, try to reset the zoom level on Craig's List. You can do this either using

Ctrl+0 (that's a zero)

or

View menu > Zoom > Reset