I'm not sure what changed or when this started happening but now when I get sent an image, I receive a text from my carrier with a link and a password so I can view it in a browser. I assume this means MMS isn't activated or something is wrong with it. I'm running 5.0.1 on a 4S. Facetime works. Here are my installed packages:
Activator
AnyLockApp
Barrel
biteSMS
CloserEnhancer
Color Keyboard
FastClear
iFile
IntelliScreenX
LockScreen Multitasking
LowPowerBanner
MobileVolumeSound
MultiIconMover
No Update
NoStoreButton
PasswordPilot
QuickNote
Springtomize 2
Update Hider for iOS 5
WeeFlashlight
WeeSearchPro
WinterBoard
Zephyr
Zeppelin
Activator
AnyLockApp
Barrel
biteSMS
CloserEnhancer
Color Keyboard
FastClear
iFile
IntelliScreenX
LockScreen Multitasking
LowPowerBanner
MobileVolumeSound
MultiIconMover
No Update
NoStoreButton
PasswordPilot
QuickNote
Springtomize 2
Update Hider for iOS 5
WeeFlashlight
WeeSearchPro
WinterBoard
Zephyr
Zeppelin