Windows 7: Freeze when copying item

HI all ..i have some problem here..that when i copying an item from computer to my flashdrive/pendrive its will freez...dunno why i try use another device like my external harddisk and have same problem when i try on another Pc its working properly..if its freez i have to wait about 15-20minutes to finish the copying file..large or small file is same like 1mb file i have to wait for 15minutes is it logic??i have use the back port still same..plz help me..appriciate..there is some pic.

izzdihar, I suspect all those attempts are via a USB hub. do you have up to date drivers?
Have you checked your Device Manager for any problematic device (yellow triangle on it)?

Yeah..have one with yellow triangle on it..its "Unknown Device"..

Update the chipset/motherboard drivers.

Is the USB hub OK in Device Manager? Maybe it is the Unknown device and causing the problem. Try to update the drivers as Legacy suggested, specially for that problematic one (right click, and "update driver")

cannot find driver for unknown device...already update chipset/motherboard driver from biostar.com