Firefox toolbar login struggles with + (plus) symbol

I've used a + symbol in my email address to register... Works fine on the site, and the AIR app, but the Firefox toolbar won't let me login... No, I'm not trying to log into all of them at the same time in case you were wondering...

I use gmail and the + symbol to create unique email addresses which help me to identify which companies are abusing / selling my email address... For example:

username+tokbox@googlemail.com
username+getsatisfaction@googlemail.com

This way, when I get spam from a third party and can recognise who 'leaked' my email address and attempt to take action accordingly... Utopian, I agree!

Not all sites let you register these email addresses, fortunately, yours does... Kudos! However, I think you need to modify the Firefox toolbar to support this too 'cos it won't let me log in...

Ta!