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I vitually cannot kill my X in the course of a day. Moderate use after 14 hours still at 50%.
. Phone has some minor quirks, but overall this is such an amazing device.Rebooted and now at 70%, so is the rebooted number correct or the number before that? If the rebooted number is correct then wow, my battery would be the shit then.
I'm thinking it is a software bug also. Took mine off charger at 7:00 AM and low/moderate use until I got off work at 4:00PM. It had 20% showing left, then I shut off, removed battery, started it back up, and showed 50%. It has held at 50% for another couple hours now.

what are you guys using to see the actual % of battery left?
app? widget?
Settings->About Phone->Status->Battery Level
Although there are widgets that will display it, I think.
Give it some time, the software needs calibration. This is a good reason to drain it down low, but it's not necessary "per se" for continued battery life.
Everyone has only had the phone for a few days now
Calibration, and reported battery was a subject in the moto droid, and htc incredible forums, too.
How much time should I give it? It has been 5 days now for me and I am lucky to get 5 hours out of one full charge. It can shut off in as little as 4 and I don't think I am doing anything excessive on it.
No live backgrounds, GPS off, not too many widgets. Screen brightness set to low. I am running LP beta, flikie wallpapers w/ rotation, and beautiful widgets among others. I really don't have enough experience to know what could be draining the battery so quickly.
This is my first android phone and so far the battery life is not good. Others people in this forum are getting 10 - 12 hours on a single charge and I have to charge at least twice a day.
What should I do?
I'd be willing to bet that is the culprit. Go to running services and see how long thats been running. Things like this will NEVER let your phone truely sleep. I bet your awake time is close to 100%