the xp machine is on the wireless router,its workt perfect when i stream to my vista laptop,ive even goten the vista laptop to have 720p streams without any problems.
ive turned off firewall in xp and have it turned off on mac. and the xp isnt downloading anything.
EDIT: after searching google i found that vlc default caching is 1500 so i set it to 6000 and now the video is playn fine without and problems. i just wonder why when i used vlc on vista and streamd i never had to mess about with such settings,even when i streamd 720 hd stuff to the vista laptop. owell,i guess pc's can do things better and macs can do other things better lol