i guess this sums the issue up:
"You may notice that the electric appliance such as power tools work fine with broken ground prong. That?s why a lot of people just ignore it and keep using those tools with the plug that missing ground prong. But fact is the ground prong is just like insurance. When a wire comes loose inside of the ungrounded tool, and the loose wire touches the metal parts. If the loose wire is hot, the metal part is hot, too. Anyone who touches, it will get a potentially fatal shock. With grounded, the electricity from the hot wire flows straight to ground, and this trips the fuse and prevent electric shock. "
my CRT monitors power cord is now 2 pronged instead of 3 pronged.
I'll get a replacement cable later (the monitor isn't used much), but, is there any significant reason to stop using the current cord? (afterall, i've been using a extension strip with missing ground prong for months). I haven't tried plugging it back in since this happened.
for the curious: yes the ground prong was left in the power socket for under a day until i noticed the problem