This is not just a fix but a FULL app all you need to do is put it into your /Applications.
I made this last night for my jailbroken 1.1.3 ipod. This also includes the carrier icon fix. I'm not sure how well this works with iPhone but it worked perfectly for me on my iPod Touch. Make sure you see all permission for the folders AND files to 0755.
Sadly the file is to large for me to upload on the site and I'm not sure if it is against the rules to link to outside sites so I will for the sake of helping everyone and I'll suffer the consequences.
UPDATE: THE CARRIER ICONS DO NOT WORK ON IPHONE!
http://www.speedyshare.com/294615396.html