Has anyone got and ideas what I can do with this?

The server hangs on processing loadstage 1 loading of NLMs and a
server -kf8
shows it stuck on loading LSL.NLM in loadstage 1. This has happened
instantly after applying NW65SP6.

Without the QLogic driver the server boots fine (except it can't access our
SAN - a Xyratex Stratisraid box and therefore can't act as part of the cluster)

I've upgraded, downgraded and changed the QL driver. I've tried removing
the netware registry files, recreating the SDB partition, changing the
startup load order so that they load at the end, changing the flags on the
driver to nigh on every combination.

The servers are Dell 2650s with the latest BIOS and firmware.