Description of problem:
Sometimes when I am editing a RHEL bug, the component is incorrectly changed to "4suite" (that's the first component on the component list).

I know I didn't touch the component field because:
1) I would need to click the "edit" link to change the field
2) If I changed the field, I would need to manually uncheck the "reset assignee" checkbox to change the component without reassigning the bug

Example where it has happened:
https://bugzilla.redhat.com/show_activity.cgi?id=690521
See the change made at 2011-04-01 10:00:20 EDT.


Version-Release number of selected component (if applicable):
Bugzilla: the version running at http://bugzilla.redhat.com/
Browser: Google Chrome 10.0.648.204 x86_64, on Fedora 14 x86_64



How reproducible:
Very hard to reproduce. Happens once in a while.


Steps to Reproduce:
I couldn't reproduce it manually, but when it happened I simply did:

1. View a bug
2. Write a comment (on my case it was a private comment)
3. Click "submit"
4. See the component being changed to 4suite

  
Actual results:
Bug component was changed.

Expected results:
Bug component shouldn't be changed.

Additional info:
It seems to happen with other people, too:
https://bugzilla.redhat.com/buglist.cgi?component=4Suite&product=Red%20Hat%20Enterprise%20Linux%205

Some of the bugs shown at the query above are not 4suite bugs.