On some computers garkein ranstecken problem, and good. Works. But you have to have luck and patience in very many USB sockets!
About the speed I have made myself garkeine thought, would be glad if he would just have to work somehow.
If I only need a minute, insert the USB flash drive very carefully into the USB port to the nearest millimeter, not quite clean but not too far out then pisses me a call.
Is simply a Fehlkontruktion that does not work with any standard USB port. However, this is a basic requirement for a USB stick. Since he does not meet recommended in no case so I'm sorry.
Who infects the stick always on the same PC and luck that the combination is in harmony have nothing to complain but to me that's nothing ...