Personally as prior senior management, I do not like it when I see employees surf the web during company time. Unless it's on a break or if they're finished with their work. I remember when we used to hire students for secretarial positions and sometimes enigneering interns. It's unbelievable how stupid they think I am. I'll be walking by and I'll hear a click, type, type, type, and voila! When I get there, they're pretending to be surfing for info.
Better yet are those that install chat programs like ICQ and AIM on the company computers. First off, we did not allow this and those that were warned and later caught were fired. It's funny cuz this one time, I heard a bunch of typing from my assistant, and I was thinking, well, I didn't give her any tasks that would require that amount of typing. So I walked over and she had a blank word document up.

Hahahahah laughed my ass off that day. I told her that the next time she wants to chat, she can, just do it on her own time. So I guess I was the hard ass manager that wanted everything efficient.
now I've quit that job, and have been loitering around for the past 6 months. Ain't life grand?
Oh yeah. gotta find a job...... eventually