sin crashes when root

Is this a known issue, or am I doing something wrong (/ have bad hardware or
something)?

Thu Feb 28 14:31:26 2002 on /dev/ttyp0
Last login: Mon Feb 25 20:49:50 2002 on /dev/ttyp0

sin

Memory fault (core dumped)

exit

$ sin
procnto 1 0 0 0 0 692278
tinit 2 8K 36K 8K 516K 19
slogger 3 8K 68K 4K 516K 17
pci-bios 5 36K 40K 4K 516K 45
devb-eide 6 28K 12736K 32K 604K 20333
devc-con 7 44K 72K 8K 528K 167
fs-pkg 8 108K 256K 52K 1309K 4025
pipe 4105 12K 56K 36K 1057K 330
mqueue 12292 12K 36K 4K 516K 15
devc-pty 53259 28K 132K 12K 524K 2268

snipped >>>>>>>>>>>>>>>>>>