XBMC slow


I have XBMC installed and its working ok, but sometimes browsing folders in Navi x, icefilms etc can be very slow. Its just says loading for minutes. Is it something wrong with my software/hardware (ATV2) or are the servers overloaded? 

Navi x has been slow for ages, servers running out of capacity! Try using early in the day and recording to atv for use later.

How can i record to my ATV? Can i connect a hard drive ?

goto navi-x - choose movie - hold down menu button on remote until a sub menu appears - press download - simple!

Can i download it to my NAS?


Thanks for help!

not as far as i know.