This doesn't look like a problem with Firefox itself. If printing also has problems since the last few days, then some system resource has been messed up somehow.
You need to recollect what changes have been done to the system (upgrading, different configurations, etc) and try to reverse those. Maybe reinstall the older version, if that one did work well.
Last edited by Tinkster; 10-30-2010 at 06:12 PM.