Created attachment 677848 [details] Skype_C2C_addon_issue_with_FF17.docx User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.4 (KHTML, like Gecko) Chrome/22.0.1229.94 Safari/537.4 Steps to reproduce: 1. Installed Firefox 17 2. recompiled Skype click-to-call add-on with gecko17 since its a binary component. 3. installed the add-on. 4. it does not complain now that its incompatible but then it does not function as expected. The plugin has a button on the toolbar that when clicked shows a window with options, but now it doesn't show anything. The investigation I've done is attached as a document below. Expected results: 1. The installed add-on displays a button on the toolbar which when clicked shows a list of options. With Firefox17 it shows nothing when clicked. 2. the add-on should highlight phone numbers, for example if you google for 1-800-COMCAST you should see phone numbers being highlighted with a small blue skype icon next to it.