"Linux infection proves Windows malware monopoly is over"??
That is indeed a rubbish headline. If it was a Firefox or OpenOffice.org binary shipped with Ubuntu, then it would be a big deal. But an IRC server? Something that only 0.001% of people ever use?
Oops. Unreal IRC server has a backdoor.
That's not great news, but it is one program not "Linux".
The programmers and maintainers of UnrealIRC have just learnt some valuable lessons. There are reasons for MD5 checksums and PGP/GPG signing and using limited accounts with secure access to servers. If these methods aren't implemented then problems can occur. Notice that CVS and pre-compiled versions weren't affected, just a tarball replaced on the main server.