I'm a single person but I do believe it is wrong. Generally I believe that adults are entitled to do whatever they like as long as it doesn't hurt someone else. Clearly there isn't an understanding between the two of you that it's cool for him to look at these sites. Some marriages would allow that and that's their business, but him lying about the fact that he searched for that type of site clearly indicates he knows very well that you wouldn't see it as appropriate and yes, your child does need to be protected from this. And if you found out that quickly how to look up the computer usage history (good on you for that - I've been computing for years and would have no idea how to do that) can you imagine how quickly your child will find out how to do it?? You now how computer and gizmo savvy kids are these days.

There's something else I feel I should mention. My psychologist suggested I read a book called The Brain that Changes Itself. She suggested it to me to give me hope that all my hard work in battling Bipolar is not wasted and that I AM changing my brain for the better. But it has a whole section relating to addiction to Internet Porn. I'm a sober alcoholic (11 years in AA) and even a recovered person in AA, this discussion about Internet Porn Addiction scared me. It's very insidious - like, say gambling, where the high you get by betting a certain amount just triggers the brain to want more, and then of course there are tragic consquence as the illness escalates, the same dynamic happens with Internet Porn.

I don't know what the answer is for you, except if you are seeing a psychiatrist or psychologist for yourself, discuss it with them and get support - and even specific support for your husband. Unless you husband is faced with consequences he won't stop, and even if faced with consequences he may not stop. I don't know useage patterns around this stuff but it does make me wonder, if he jumped straight in like that, with a new computer, has he been accessing material like this elsewhere?