I have noticed after disabling a couple of VOIP accounts that my battery life has increased. I have two right now (skype, SIP). Those are my primary ones that I use. Yesterday I was about 80% after 7 hours. That was also mostly standby. Still seems like it is dying fast. I will try disabling the other two accounts for a day and see what happens there.
Also, does anybody know what the Ovi account is used for on the device itself?