1.9.17alpha5 and 1.9.17: keyboard unusable after domain logons

[Luke Kenneth Casson Leighton]

dear samba users,

is anyone else experiencing keyboard lockup from w95 after a domain logon 
user logs out from a samba server?  is anyone using 1.9.17 for domain 
logons _not_ experiencing keyboard lockup?

you can press escape, tab, shift-tab, but as soon as you type any 
letters, the caps-lock and scroll-lock keys flicker on, and you can't 
type in a username or password.

it's really bizarre.  unplugging the keyboard and re-plugging it in makes 
no difference.

we're clearly tickling something wierd in w95, and i'd like to nail it.

luke