Can I consider normal to drain battery after 5 hours considering I'm always online (Skype, Jabber, GTalk, SIP/Voip), always in HSDPA, surfing on the web from time to time, sending about ten sms, and some days listening to music for 2-3hrs?

I never thought it strange but this thread makes me think I should have more time from one charge to another.

What do you think? Should I worry?