Something is very wrong here. You need to check the battery, because this is baaad.
I am an average user. Bluetooth, music, net, text, calls. No twitter or anything, I run beautiful widgets, along with a few others, I work in a building with poor reception, so depending on where I am my phone has to search for signal, especially if I'm in the edit suite. I unplug at 7:10a and plug in at 10-2am (depends on the day) and never have less than 30% left. I wake up and it's projected for me to get 40 hours of battery life. I'm no power user or anything, but that's a fair battery, I'm not going to push for 2 days on a charge or anything, but if I had to, I could.