I have two printers attached to my computer, one through LPT port and another through USB port. Very often, I get “Printer not responding” message when try to use the printer attached through USB port. The one through LPT never has problem.
Sometimes, I also connect my digital camera or plug flash drive in other USB ports. I notice the similar problem. The camera or flash drive can not always be detected.
So far, the only way to make the USB port work again is to reboot the computer.
