id summary reporter owner description type status component version resolution keywords cc guest host 11839 A USB problems(HANG) when ugrade 4.0.18 to 4.1.0 => Fixed in SVN Woof " I have biometric device (fingerprint recognition mouse). it was worked on 4.0.18 but 4.1.x, it does not work. if the device starts capturing fingerprint, VM process is hanged. at that time Virtualbox.exe has 1 zombie thread. looks like it waits a response from kerenl driver. " defect closed USB VirtualBox 4.1.0 fixed USB hang HANG Windows Windows