An unintended keystroke combination reduced the display to 2/3 of the screen (NOT F11) leaving the right-hand side black in only one tab (other tabs are ok).
Windows 7, Firefox 17.0
Solved! Thanks Tyler
Modified by arnesson
Chosen solution
by TylerdownerFont size and zoom - increase the size of web pages try to reset the zoom to 100%
Read this answer in context 1Additional System Details
Installed Plug-ins
- Shockwave Flash 11.5 r502
- Next Generation Java Plug-in 10.9.2 for Mozilla browsers
- NPRuntime Script Plug-in Library for Java(TM) Deploy
- VLC media player Web Plugin 2.0.2
- 5.1.10411.0
Application
- User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20100101 Firefox/17.0
More Information
Chosen Solution
Font size and zoom - increase the size of web pages try to reset the zoom to 100%
Solution chosen