series/chaos
   chaos-39
series/rh-2.4.18-18
   redhat 2.4.18-18
series/hp-pnnl              ** Note: functionally equivalent to 2.4.19 
   linux-2.4.18-hp2_pnnl2
series/vanilla-2.4.19       ** Not officially supported
   linux-2.4.19
series/lin-2.5.44
   uml-2.5.44