Quoting "John A. Sullivan III" <jsullivan@opensourcedevel.com>:
We have had some complaints from clients in the last few days where they have installed a fresh copy of firefox and then the latest plugin and the login screen bounces up and down unusably. That is, the blue login area drops below the black background and then back up again.
I've already seen this, on a vista 15" laptop. But I can't verify right now.
There is apparently some known issue with the latest Firefox on sub-10" screens where this is a problem with Firefox. However, one client has experienced it on two normal sized laptops and we've not heard about the Firefox problem affecting those.
From my side :
On my Dell mini9 with Ubuntu x2go doesn't work, the window appears but
isn't refreshed.
On a 17" laptop running windows 7 the session crash really often, it's
totally unusable.
And as already said, on a 15" laptop the blue screen go down. But in
my case, it doesn't bump, just go down and stay here. And if we start
the session, the session itself go down.
I don't know how to avoid this, but perhaps you can use ssh-key ?
gml