N73 is very slow

check ur phone memory nd transfer the data to memory card keep only messages and contact in phone memory nd save all music,videos,wallpapers in memory card nd keep some vacant space for phone memory its runs like ram in mobile... rply soon

Has it always been slow? If not, you could back up all your data (synchronize it to your computer using the software on the CD that came with it,) then perform a hard rest - this will wipe everything off your phone. You can do this through the menus. I believe the option is called "reset to factory settings" or something. You'll then need to copy all the data off the pc back onto your phone. you'll also need to reinstall any applications you installed, this could be bad if you paid for them!