ok first off, i cant help you with the random freezing, but i did have problems with steam like you, what i did was save the entire steam folder to another hard drive, then deleted it from the hardrive on my computer, then i trasfered it back and the freezing just went away, dont know how it fixed it, but steam works like it should, hope this is a little usefull
Not without something to go on! No system specs including RAM, OS. No details of freeze. If you don't have enough RAM, if you don't do regular maintenance on the system, if you don't protect it with updated security programs, it's not going to work.