Steam was working perfectly for me for the longest time, about 2 years. Just yesterday I finished pre-loading call of duty 4 and it was 100% ready, today it randomly reset itself back to 20% complete. I went and checked the file and it had everything in it, 6gbs full so i don't know why it's even downloading again. On top of that whenever i try to launch comapny of heroes it says that game is currently unavailable, please try again at another time. Tried some other games and they launch fine as far as I know. Any explanations for this or is it just one of those days.