vi drop outs with "Bus error"

Anyone else seeing vi dropping out after a while with "Bus error" & no core ?

Seen on 10.0-ALPHA4 & now on 10.0-ALPHA5 
(after buildkernel installkernel buildworld installworld )

It's not hardware, the laptop is stable & has compiled 594 ports so far,
cd /usr/bin ; ls -l nvi*
-r-xr-xr-x  1 root  wheel  402064 Oct 12 02:42 nvi.4*
-r-xr-xr-x  1 root  wheel  402432 Oct 12 02:42 nvi.5*
file nvi*
nvi.4: ELF 64-bit LSB executable, x86-64, version 1 (FreeBSD), dynamically \
	 linked (uses shared libs), for FreeBSD 10.0 (1000055), stripped
nvi.5: ELF 64-bit LSB executable, x86-64, version 1 (FreeBSD), dynamically \
	 linked (uses shared libs), for FreeBSD 10.0 (1000055), stripped

Cheers,
Julian
-- 
Julian Stacey, BSD Unix Linux C Sys Eng Consultant, Munich http://berklix.com
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