mozilla does not uninstall or upgrade cleanly.  I installed 8.0, which put:

mozilla-1.0.1-24
mozilla-chat-1.0.1-24
mozilla-mail-1.0.1-24
mozilla-nspr-1.0.1-24
mozilla-nss-1.0.1-24
mozilla-psm-1.0.1-24

on the system.  I then upgraded to mozilla-1.1 (rpm -Fvh on the corresponding
mozilla-1.1 rpms).  This left me with the following remnants of Mozilla 1.0.1,
now unowned by any RPM, that mozilla-1.0.1 put on the system but did not
uninstall as it should have when I upgraded:

[kaboom@skuld mozilla-1.0.1]$ ls -lR /usr/lib/mozilla-1.0.1/
/usr/lib/mozilla-1.0.1/:
total 20
drwxr-xr-x    3 root     root         4096 Sep 16 15:36 chrome
drwxr-xr-x    2 root     root         8192 Sep 16 15:36 components
drwxr-xr-x    3 root     root         4096 Sep 16 15:36 defaults
drwxr-xr-x    4 root     root         4096 Sep 16 15:36 res

/usr/lib/mozilla-1.0.1/chrome:
total 36
-rw-r--r--    1 root     root        29856 Sep 14 03:58 chrome.rdf
drwxr-xr-x    7 root     root         4096 Sep 14 03:58 overlayinfo

/usr/lib/mozilla-1.0.1/chrome/overlayinfo:
total 20
drwxr-xr-x    3 root     root         4096 Sep 14 03:58 communicator
drwxr-xr-x    3 root     root         4096 Sep 14 03:58 cookie
drwxr-xr-x    3 root     root         4096 Sep 14 03:58 editor
drwxr-xr-x    3 root     root         4096 Sep 14 03:58 messenger
drwxr-xr-x    3 root     root         4096 Sep 14 03:58 navigator

/usr/lib/mozilla-1.0.1/chrome/overlayinfo/communicator:
total 4
drwxr-xr-x    2 root     root         4096 Sep 14 03:58 content

/usr/lib/mozilla-1.0.1/chrome/overlayinfo/communicator/content:
total 4
-rw-r--r--    1 root     root         1592 Sep 14 03:58 overlays.rdf

/usr/lib/mozilla-1.0.1/chrome/overlayinfo/cookie:
total 4
drwxr-xr-x    2 root     root         4096 Sep 14 03:58 content

/usr/lib/mozilla-1.0.1/chrome/overlayinfo/cookie/content:
total 4
-rw-r--r--    1 root     root          491 Sep 14 03:58 overlays.rdf

/usr/lib/mozilla-1.0.1/chrome/overlayinfo/editor:
total 4
drwxr-xr-x    2 root     root         4096 Sep 14 03:58 content

/usr/lib/mozilla-1.0.1/chrome/overlayinfo/editor/content:
total 4
-rw-r--r--    1 root     root          562 Sep 14 03:58 overlays.rdf

/usr/lib/mozilla-1.0.1/chrome/overlayinfo/messenger:
total 4
drwxr-xr-x    2 root     root         4096 Sep 14 03:58 content

/usr/lib/mozilla-1.0.1/chrome/overlayinfo/messenger/content:
total 4
-rw-r--r--    1 root     root         1784 Sep 14 03:58 overlays.rdf

/usr/lib/mozilla-1.0.1/chrome/overlayinfo/navigator:
total 4
drwxr-xr-x    2 root     root         4096 Sep 14 03:58 content

/usr/lib/mozilla-1.0.1/chrome/overlayinfo/navigator/content:
total 4
-rw-r--r--    1 root     root          856 Sep 14 03:58 overlays.rdf

/usr/lib/mozilla-1.0.1/components:
total 0

/usr/lib/mozilla-1.0.1/defaults:
total 4
drwxr-xr-x    2 root     root         4096 Sep 16 15:36 autoconfig

/usr/lib/mozilla-1.0.1/defaults/autoconfig:
total 0

/usr/lib/mozilla-1.0.1/res:
total 8
drwxr-xr-x    2 root     root         4096 Sep 16 15:36 dtd
drwxr-xr-x    2 root     root         4096 Sep 16 15:36 fonts

/usr/lib/mozilla-1.0.1/res/dtd:
total 0

/usr/lib/mozilla-1.0.1/res/fonts:
total 0
[kaboom@skuld mozilla-1.0.1]$