Thanks for all the replies.
I'm using IE 10 in protected mode Win 7 Home Premium here now and forums posting works. It is only WC Gallery posting that doesn't work for me. Compatibility View does not change this result.
Yes unfortunately this is my Admin account but.... I only tend to go to safe websites with it. Even a limited access user account will not prevent viruses from landing on a computer. It will prevent most viruses from executing their destructive effects.
I do use a limited access account for general web browsing.
This is the Hijack threat it found:
HKLM\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\IMAGE FILE EXECUTION OPTIONS\FIREFOX.EXE (Security.Hijack) -> Quarantined and deleted successfully.
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\firefox.exe|Debugger (Security.Hijack)
I don't know for certain if these are true Hijack Threats or not since these were also reported as quarantined and deleted yet I had to manually use Regedit to really clean the registry.
Could it be the Data Value that Malwarebytes didn't like?
Anyway after re-installing the latest Firefox these entries are no longer in the registry though.