Ah! On examining the console messages I now see the panic is happening when I reboot when the running old kernel shuts down -- that must be the detach! -- and not on booting the new kernel as I thought. Apologies for any confusion and I still have to investigate this further.
I should probably explain that I am using a Old Wifi card in a pccard-PCI bridge on a desktop system which has always been problematic since FreeBSD-4 was the only OS that worked with this hardware when I originally installed it Christmas 2001. It didn't work with Linux at this time and I wouldn't recommend using this setup as a NIC. Anyway the good news that I now have DF 1.5.0 running on my hardware again. Thanks and a Happy New Year! Cheers Steve On 12/31/05, Steve Mynott <[EMAIL PROTECTED]> wrote: > panic: assertion: s->last_td != curthread in lwkt_serialize_enter
