I can confirm that with the latest Linux trunk, same symptoms.
There's a similar report in Ubuntu's Launchpad:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/291073
Removing printing-related preferences doesn't help, at least in my case, though.
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.7pre) Gecko/2009021504 GranParadiso/3.0.7pre
I can confirm that with the latest Linux trunk, same symptoms.
There's a similar report in Ubuntu's Launchpad:
https:/ /bugs.launchpad .net/ubuntu/ +source/ firefox/ +bug/291073
Removing printing-related preferences doesn't help, at least in my case, though.
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.7pre) Gecko/2009021504 GranParadiso/ 3.0.7pre