Any ideas? I haven't had a chance to look at what's changed lately yet. 
BTW - OF with no configured display works again.


trap: pid 0.0 (): kernel MCHK trap @ 0x1c5358 (SRR1=0x49030)
panic: trap
Begin traceback...
0x0058fda0: at trap+0x124
0x0058fe20: kernel MCHK trap by ex_getstats+0x44: srr1=0x49030
             r1=0x58fee0 cr=0x20009032 xer=0 ctr=0x1c7784
0x0058fee0: at mii_tick+0x3c
0x0058ff00: at ex_tick+0xcc
0x0058ff20: at softclock+0x2c8
0x0058ff50: at hardclock+0x130
0x0058ff70: at decr_intr+0x108
0x0058ffa0: at trapstart+0xbb8
0xd6291e30: at lcsplx+0xc
0xd6291e40: at Idle+0x24
0xd6291e50: at mi_switch+0x180
0xd6291e90: at ltsleep+0x2d4
0xd6291ed0: at sched_sync+0x248
0xd6291f40: at cpu_switchto+0x44
0xd6291f50: at _prop_array_pool+0xffad9e14
End traceback...
syncing disks... done
dumpsys: TBD
rebooting



(display stuff)

machfb0 at pci0 dev 17 function 0: ATI Technologies Mach64 VT (rev. 0x40)
pci_mem_find: void region
machfb0: 8 MB aperture at 0x81000000, 0 KB registers at 0x00000000
machfb0: 1024 KB EDO DRAM 63.116 MHz, maximum RAMDAC clock 170 MHz
mach64_get_mode: 640 736 1056 864 480 483 515 525
machfb0: initial resolution 1152x864 at 8 bpp
wsdisplay at machfb0 not configured