Thank you for submitting this bug report. I have not been able to reproduce this bug though. I keep alt-tabbing everyday between firefox and other apps and don't see this behaviour. Firefox does use a hefty 250-300 MB during usage but this is normal. Can you please resubmit this bug report using apport so that we can get a better look at your system info which will help the developers greatly. Until then I am marking this incomplete.
Thank you for submitting this bug report. I have not been able to reproduce this bug though. I keep alt-tabbing everyday between firefox and other apps and don't see this behaviour. Firefox does use a hefty 250-300 MB during usage but this is normal. Can you please resubmit this bug report using apport so that we can get a better look at your system info which will help the developers greatly. Until then I am marking this incomplete.