the Proliant guys still can't figure out that Redhat != Linux. Just try to get the health monitor or Insight agent running under Debian.
Actually, they do support more then RedHat. Support also exists for SuSE, TurboLinux(big in Japan) and the UnitedLinux based distros.
Of course they are all RPM based, so I can see how Debian might not take kindly to that. Trust me, many of us on the inside beat the developers up over Linux interopibility issues quite a bit. And they have gotten better. The initial agents would require specific kernels, and were slow to keep up with errata kernels. That has since been solved in a similar way that NVidia does their Linux drivers.
I really wish we hadn't lost Bruce Perens. I'm sure if he was still at HP, there would be more Debian support.
edit: Oh, that reminds me. Have you upgraded to the newest firmware for the Remote Insight boards (and integrated varaties)? It has official support for Mozilla under Linux, including I believe working virtual CD-ROM on the RILOE II.