I have the Verizon iPhone 4 and today I happened to install a lot of things from Cydia. I believe this problem started after I installed Bytafont but I can't be sure. I have sense uninstalled that program as well as respring the original fonts and restarting the phone. The problem has not gone away. Basically the keys on certain keyboards wont press. I can fix it temporarily but it will break again as soon as I respring or reboot the phone. I will post a video of what is happening. I don't know what to do. If anyone has any idea please help me out. Thanks.
http://s77.photobucket.com/albums/j62/TheNookster/?action=view¤t=134_1025.mp4
http://s77.photobucket.com/albums/j62/TheNookster/?action=view¤t=134_1025.mp4