-hp-pnnl-2.4.20 linux-2.4.20-hp4_pnnl1 same as vanilla but no uml
-vanilla-2.4.20 linux-2.4.20 patch includes uml
-chaos-2.4.20 linux-chaos-2.4.20 same as rh-2.4.20-8
-rh-2.4.20 linux-rh-2.4.20-8 same as chaos-2.4.20
-rh-2.4.18-18 linux-rh-2.4.18-18 same as chaos but includes uml
-chaos linux-chaos-2.4.18 same as rh-2.4.18-18 but no uml