[root@localhost hammer]# yum remove firefox.i386 && yum install firefox firefox-                                            32
Loading "installonlyn" plugin
Setting up Remove Process
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Package firefox.i386 0:1.5.0.10-5.fc6 set to be erased
--> Running transaction check
Setting up repositories
livna                     100% |=========================| 1.1 kB    00:00
updates                   100% |=========================| 1.2 kB    00:00
core                      100% |=========================| 1.1 kB    00:00
extras                    100% |=========================| 1.1 kB    00:00
Reading repository metadata in from local files
--> Processing Dependency: libxpcom.so for package: firefox-devel
--> Processing Dependency: libxpcom_core.so for package: firefox-devel
--> Processing Dependency: firefox for package: firefox-32
--> Processing Dependency: firefox = 1.5.0.10-5.fc6 for package: firefox-devel
--> Processing Dependency: libmozjs.so for package: firefox-devel
--> Restarting Dependency Resolution with new changes.
--> Populating transaction set with selected packages. Please wait.
---> Package firefox-devel.i386 0:1.5.0.10-5.fc6 set to be erased
---> Package firefox-32.x86_64 0:0.0.1-5.fc6 set to be erased
--> Running transaction check

Dependencies Resolved

=============================================================================
 Package                 Arch       Version          Repository        Size
=============================================================================
Removing:
 firefox                 i386       1.5.0.10-5.fc6   installed          34 M
Removing for dependencies:
 firefox-32              x86_64     0.0.1-5.fc6      installed          422
 firefox-devel           i386       1.5.0.10-5.fc6   installed          17 M

Transaction Summary
=============================================================================
Install      0 Package(s)
Update       0 Package(s)
Remove       3 Package(s)

Is this ok [y/N]: y
Downloading Packages:
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
  Removing  : firefox                      ######################### [1/3]
  Removing  : firefox-devel                ######################### [2/3]
  Removing  : firefox-32                   ######################### [3/3]

Removed: firefox.i386 0:1.5.0.10-5.fc6
Dependency Removed: firefox-32.x86_64 0:0.0.1-5.fc6 firefox-devel.i386 0:1.5.0.10-5.fc6
Complete!
Loading "installonlyn" plugin
Setting up Install Process
Setting up repositories
Reading repository metadata in from local files
Parsing package install arguments
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for firefox-32 to pack into transaction set.
firefox-32-0.0.1-5.fc6.x8 100% |=========================| 3.4 kB    00:00
---> Package firefox-32.x86_64 0:0.0.1-5.fc6 set to be updated
---> Downloading header for firefox to pack into transaction set.
firefox-1.5.0.10-5.fc6.i3 100% |=========================|  90 kB    00:01
---> Package firefox.i386 0:1.5.0.10-5.fc6 set to be updated
---> Downloading header for firefox to pack into transaction set.
firefox-1.5.0.10-5.fc6.x8 100% |=========================|  92 kB    00:01
---> Package firefox.x86_64 0:1.5.0.10-5.fc6 set to be updated
--> Running transaction check

Dependencies Resolved

=============================================================================
 Package                 Arch       Version          Repository        Size
=============================================================================
Installing:
 firefox                 i386       1.5.0.10-5.fc6   updates            18 M
 firefox                 x86_64     1.5.0.10-5.fc6   updates            17 M
 firefox-32              x86_64     0.0.1-5.fc6      extras            4.3 k

Transaction Summary
=============================================================================
Install      3 Package(s)
Update       0 Package(s)
Remove       0 Package(s)

Total download size: 35 M
Is this ok [y/N]: y
Downloading Packages:
(1/3): firefox-32-0.0.1-5 100% |=========================| 4.3 kB    00:00