I also see it on my PC (32-bit 10.04, nvidea graphics) but it is not always showing the plugin module running. One time this morning after it happened I got this:
paul@paul-ubuntu:~$ ps -Af | grep firefox paul 29536 1 1 19:39 ? 00:01:13 /usr/lib/firefox-3.6.23/firefox-bin paul 29589 29536 0 19:39 ? 00:00:00 /usr/lib/firefox-3.6.23/plugin-container /usr/lib/flashplugin-installer/libflashplayer.so 29536 plugin true paul 32763 4940 0 21:20 pts/1 00:00:00 grep firefox
However a short while later it showed only this:
paul@paul-ubuntu:~$ ps -Af | grep firefox paul 9215 4940 0 12:01 pts/1 00:00:00 grep firefox paul 29536 1 0 Oct28 ? 00:07:13 /usr/lib/firefox-3.6.23/firefox-bin
As already commented, it looks like Firefox has closed normally, but clearly it has not.
I also see it on my PC (32-bit 10.04, nvidea graphics) but it is not always showing the plugin module running. One time this morning after it happened I got this:
paul@paul-ubuntu:~$ ps -Af | grep firefox firefox- 3.6.23/ firefox- bin firefox- 3.6.23/ plugin- container /usr/lib/ flashplugin- installer/ libflashplayer. so 29536 plugin true
paul 29536 1 1 19:39 ? 00:01:13 /usr/lib/
paul 29589 29536 0 19:39 ? 00:00:00 /usr/lib/
paul 32763 4940 0 21:20 pts/1 00:00:00 grep firefox
However a short while later it showed only this:
paul@paul-ubuntu:~$ ps -Af | grep firefox firefox- 3.6.23/ firefox- bin
paul 9215 4940 0 12:01 pts/1 00:00:00 grep firefox
paul 29536 1 0 Oct28 ? 00:07:13 /usr/lib/
As already commented, it looks like Firefox has closed normally, but clearly it has not.