2) First item under work experience "Summer Intern, Senior Technician"... This sounds like you were interning as a senior technician. Not believable. It wasn't until I saw you worked there for 4 years that I guessed you were listing all jobs you had at that place.
3) There is so much boring/unrelated trash in this resume it is hard to get through. I dont care that you were a paper grader unless it has some impact on what you'll be doing for me. Tell me about what kind of projects you spearheaded as a lead developer for your university. (As an aside, virtually no employer will believe you were a lead developer for your university as a student -- you sound like a liar and I'm not even half way through the page).
4) On your activities section, REMOVE HACKING! Your boss may know the colloquial meaning of the the term, he may not. But I would bet the farm that HR thinks you are spending your free time trying to steal people's passwords.
4-b) Remove your activities and interests entirely.