any luck w/ json encode decode?

[eluser]CI jforth[/eluser]
Ok maybe I can get some insight here on this issue.

If i take a json feed from a site that I know works like http://jaiku.com/feed/json
I can parse it fine with jquery no problems but if i take that same feed and pass it through json_decode and then json_encode Shouldn't encode return the same data as the original? I keep getting an error in firefox invalid label with the encoded feed.