Hi, Ray
I'm using FF18 at the moment, but this issue has been going on through the last 2 FF versions (or whatever the FF was that existed when Outlook.com came out).
I did disable ABP and Webmail Ad Blocker, but that had no effect on the links in question.
I did start FF in safe mode – that automatically disables all extensions, right ? – and logged in to Live.com, but no change. Also, I use CCleaner at least once a month, so I know the FF cache is not causing problems here, because that's cleaned each time.
If necessary, I can sometime try disabling each add-on and/or plugin and then re-enabling them individually to see if that will do anything (assuming this is different from starting FF in safe mode).
Anyway, thanks for the suggestions !