Hello DreamMaster:
To me, trust is a very vital part of a successful marriage. Trust means being comfortable and sure of your partners love and interest.
To me, trust does not allow for any sexual interest in anyone other than your own mate.
Cybersex and looking at porn pictures are both avenues of fantasizing about other partners and to me, that does not promote trust. Fantasizing about other partners to me is a sign that one or both are not happy with the other. I cannot see either of these activities as having any positive affect on a marriage. I only know how I would feel if my husband fantasized with porn pictures and how he would feel if I was having cybersex with some stranger....devastated and betrayed for both of us.
Of course I realize, that everyone has their own comfort zone about marriage, but the fact that her cybersex bothers you, then perhaps a heart to heart with your wife will reveal why she finds this so appealing. Perhaps your viewing porn pictures tells her you're not totally interested in and commited to her.
Finding out what's wrong is obviously only going to come from honest dialog between you two and an honest commitment to being there for each other, not with other strangers invading your bedroom via the net and porn pictures.
Just my pennies worth.
Had Enough
PS: Welcome to the board...I hope we can help in some way