Have you made it a particulary large size? I've seen that do screwy things.
Did you accidentally change the color to white? I'm 1/2 serious and 3/4 not serious
I was being serious, hopefully humorous also.
Super large text can do wierd things.
Also if it's white, well ...
So your saying you didn't change any text attribute settings and it still won't show up?
You didn't exactly give much info in the OP. Were you actually in the 'modify signature line' area when you made the changes?
Hell, did you scroll down the page and click 'save changes'?
Come on Orbie, I'm workin to hard here, GIVE MY SOME INFO BABY!!! (Umm, yea - that WAS a joke)