hi there
i am also having the same issue, it started month or so back
i have 2 xbox's and change hard disk from 1 to another, i thought at 1st this was the issue but it wasnt , especially as from memory this started happening once i updated to the new dashboard with the mii lookalike thing.
well last night i have fixed my issue and thought i would share the fix & hopefully this will help others
on my media pc that i use for streaming, it has all the latest windows updates including service pack 3 im using windows xp media centre 32bit as at first i thought this also could be the issue. once done this, still the same outcome....BUT viewing folder structure was alot quicker!
i have installed the latest ffdshow codecs on my pc and rebooted, and as paul daniels would say "thats magic"
it all started working!!!
heres the link where i downloaded the codec package, hope this helps others
http://www.free-code...oad/FFDshow.htmgood luck
cheers
shakin