Wyszło kilka patchy do Half-Life'a, można je sciągnąć ze strony Bluesnews.
Oto one:

Client patch 1.1.0.1 to 1.1.0.4 (17.8 MB)

Client patch any version to 1.1.0.4 (51.3 MB)

Win32 dedicated server 4.1.0.4 upgrade (16.8 MB)

Win32 dedicated server 4.1.0.4 full install (94.2 MB)

Linux dedicated server 3.1.0.4 upgrade (17.6 MB)

Linux dedicated server 3.1.0.4 full install (94.7 MB)