Firefox

I recently upgraded to WP 3.5 and Firefox 17 and suddenly I can’t manipulate images in WP while writing posts. When I click on one the icons only stay one if I keep my finger on the mouse. As soon as I let go they go away so I can’t use them. It’s making posting difficult at best. Is anyone else experiencing this and/or can someone help? I’m running Windows 7(that hasn’t changed). Until I did the upgrades to the two pieces of software I had no problem. HELP!