about 16 hours in total, but thats split between my work laptop, my gaming comp and an older tower which i have setup with my tv.
I use the computer about 7-8 in day. Because i'd love to surfing in the internet especially dp and maintain my blog.
I do use one at my job so counting time on it at home I'd have to say about 10 hours + per day. I just posted in another thread about the importance of exercise, we all need something to keep from doing nothing but sitting at the computer all day and night.