Figures there will be some hams here.
I find more of the QRM (ham code for man made noise) on the ham bands when near a computer is due to the main board digital circuitry, than any other part. The add-on boards, power supply, disk drives, and monitors, do add their own. Good grounding, quality feed-line shielding, and locating the antenna well above the computer area, do all help in reducing the problem.
I do worry about these high frequency electronic fluorescent ballasts getting to be more popular. And as discussed in another thread, you're going to see a lot more of these in California in the coming years.
For more fun try 160 meters where the harmonic power is stronger and the antenna is less directional.
de KA9WGN
P.S. Check the quality of your GFCI receptacles by transmitting your 2m HT on full power next to one. Have a fire extinguisher handy in case you have a bad one.
