Some RSS Feeds wont show

[Lesmond]

* Lesmond is Jack of all trades Master of None!

[IchBin]

lol

[talkbristol]

I can't get any of the 3 feeds I tried to work.  Error log reports eg 2: fopen(http://rss.slashdot.org/Slashdot/slashdot) [<a href='function.fopen'>function.fopen</a>]: failed to open stream: no suitable wrapper could be found
File: /home/.katana/talktalk/talk-bristol.org/Sources/TPortal.php

I'm using SMF 1.1.1 & TP 0.9.7.