The problem with FireFox on my (512 mb) phone is that the OS usually kills it when I switch to another app (even tiny apps like messaging), and it's a slow Fire

The problem with FireFox on my (512 mb) phone is that the OS usually kills it when I switch to another app (even tiny apps like messaging), and it's a slow FireFox restart if I want to use it again. The OS doesn't do this with the stock browser.