I have an iPhone and it's jailbroken, running iOS 5.1. When using WiFi, it drains very quickly. The rate of discharge is about 1 percentage point every minute. Is this normal? Any suggestions? As usual, all push options are turned off, location services are off and only Safari is running.
Seems not ok to me. Does it still do that when it isn't jailbroken? If it does you should go to the Genius Bar and maybe get a replacement.
Maybe you could restore then put all your extra software on one by one to see which app is the likely cause.