id summary reporter owner description type status component version resolution keywords cc guest host 8737 After installing virtualbox 4.0.4, usb problem encountered Gibby "After installing Virtualbox 4.0.4, i am encountering problems with my usb. When copying files from USB to USB external drive, file becomes corrupt. I did restore from my previous system image before installing the virtual box and everything is ok again. This is all happening in the Host system. Suspect is that device drivers may be overwritten by virtual box. Device driver such as usb*.sys and etc. Please help. My host system is Win 7 64 bit ultimate 4 gb ram" defect closed other VirtualBox 4.0.4 fixed other Windows