WAP54G point-to-multipoint bridge with WPA

I was wondering if anyone else has experienced what I have found. I
have three Linksys v2 WAP54G's with 2.07 firmware destined for
point-to-multipoint bridge mode operation. (One bridge linked to two
other units.) This works fine with no encryption or WEP enabled, but
with WPA-shared key encryption it will only work in single
point-to-point mode. The hub unit won't link to more than one other
unit. There is no mention of this in the docs or knowledge base.

Scott