Directory not removed ... Help!

[Ray Lampman]

I created a few hard-linked directories on a sun3 work station and, now,
can't find any way to remove them. All of the directories are empty.

{shell-prompt} ls -alig

total 7
25622 drwxrwxr-x  4 lampman  users   512 Dec 29 12:03 .
35290 drwxr-xr-x  8 lampman  users   512 Jan  4 16:03 ..
36487 drwxrwxr-x  3 lampman  users  1024 Dec 29 11:54 xx.0
36487 drwxrwxr-x  3 lampman  users  1024 Dec 29 11:54 xx.1
 7377 drwxrwxr-x  4 lampman  users  1024 Dec 29 11:59 yy.0
 7377 drwxrwxr-x  4 lampman  users  1024 Dec 29 11:59 yy.1
 7377 drwxrwxr-x  4 lampman  users  1024 Dec 29 11:59 yy.2

Even root execution of rm and rmdir fails. Am I missing some obscure
option to rm or rmdir? I've exausted my local resources, I think. Then
again, I may just be blind. I hope not. :-) Thanks in advance, Ray.
-- 
I am seriously considering a career on  | Ray Lampman (608) 276-3431
the beach. I'll need a microwave modem, | Madison Wisconsin USA Earth
solar power supply, and a little shade. | {husc6,rutgers}!uwvax!heurikon!lampman