Re: do i need a password to log into ubuntu?
No you don't.
If you go to System>Administration>Users and Groups, select your account, and there where it says
Password: Asked on Login
Click on Change and check the box for 'don't ask for password on login'. (It's near the bottom).
Restart and you should go straight to your desktop, no password required.
Dell Inspiron 1501 AMD Sempron, 4GB RAM, 320GB HDD, running 12.04 64Bit
Justop Media Centre with Lubuntu 12.04, and Android
Raspberry Pi running Openelec XBMC
Ubuntu User #32384