Ok, thanks to David and Anton the Hobbit client should now support OSF/1 4.x and 5.x fully.
The problem Anton reported with the format of the uptime output was already fixed in my code, since I had the same problem from a Linux box resulting in 1 hour where the load graph wasn't being updated.
So I think Hobbit is in pretty good shape when it comes to support for various Unix systems. The client should work with AIX, FreeBSD, HP-UX, Linux, NetBSD, OpenBSD, OSF/1, Solaris and Darwin/Mac OS X. If anyone feels I've left out their favourite Unix platform, let me know - with a bit of help from You, I'm sure we can get it working.
I've tested the *BSD, Linux and Solaris clients myself. Bob Gordon kindly helped with the Darwin support, which should be working now (except for the netstat data, will do that tomorrow). If someone could confirm that AIX, HP-UX and OSF/1 work (with whatever version of those you have), it would be nice. You'll need to use the latest snapshot of Hobbit from http://www.hswn.dk/beta/, and it's a good idea to make sure you use the latest client version if you've installed the 4.1.1 version.
Regards, Henrik