Firefox Continuously Transfers 1.4Mbps Over Loopback

[jlward4th]

Sometimes my Firefox 3.5 process sits around talking to itself at around 1.4Mbps. Any idea why?

Here is what I know:

"iftop -i lo" shows:
dos:54465 => dos:4713 1.40Mb 1.42Mb 1.42Mb
<= 0b 0b 0b
dos:4713 => dos:54465 79.6Kb 80.4Kb 80.4Kb
<= 0b 0b 0b

jamesw@dos:~$ lsof |grep 4713
firefox-3 4834 jamesw 83u IPv4 685775 TCP dos:54465->dos:4713 (ESTABLISHED)

jamesw@dos:~$ lsof |grep 54465
firefox-3 4834 jamesw 83u IPv4 685775 TCP dos:54465->dos:4713 (ESTABLISHED)

Maybe Firefox just gets bored and wants someone to talk to. I'm not sure but this does seem strange. Any ideas?

Thanks.