Be careful if you decide to Jailbreak your Verizon Iphone running 4.2.8 using this new jailbreakme.com web based JB.
Its really unstable right now, for my verizon phone on 4.2.8.
Cydia wouldn't update the repos correctly and whenever i would turn the phone off its stuck at the apple logo for about 40 min and then eventually itunes will recognize it and it will start to sync but its still at the apple logo for another ten minutes..
then the phone has a frozen lockscreen.. i can't move the lock bar. then it will power cycle itself and do it all again except a little faster then FINALLY it will work.
Ive gone through this three times now, just to make sure if it was gonna be a one time thing and nope happened again.
So im restoring as soon as my itunes detects my iphone this time. Im gonna try the new Green Poison, the old GP worked great when i was running 4.2.6