speedpatch is a placebo pill. anyway, TC, thing is ...the N900 is 3 years old. If you are among the lucky ones who can overclock up to 1150mhz with no problem.. do so! also install CSSU But keep in mind that the main reason N900 feels slow nowadays is the small amount of ram (though the archtecture around it is spectacular for its time) also websites and programs become heavier as time goes by. heavier for older devices.
sudo swapset defrag