New media files not recongnized

Hi everyone I have just got a live media hub and have set up the network to share file between the hub and my PC running windows XP the problem I am have is when I update  files in the shared folders the hub don’t recongize the new files unless I reset the media hub then the new files are recongized which is a real pain to reset the hub every time has anyone got any ideas why this is happening and can offer any help.

many thanks

It’s a known limitation.