Vista DNS Suffix

I'm having problems with Vista's DNS Suffixing:

- My entire network has the dns suffix : work.intranet and I have a
BIND dns server that resolves a.work.intranet and *.a.work.intranet to
192.168.0.2 so that if I ping bbb.a.work.intranet or
ccc.a.work.intranet they all resolve to 192.168.0.2 (at least up until
Vista)

- If I ping a.work.intranet it correctly resolves to 192.168.0.2;
- If I ping a it correctly resolves to 192.168.0.2;
- If I ping bbb.a.work.intranet it correctly resolves to 192.168.0.2;
- BUT IF I ping bbb.a it no longer resolves. (could not find host)

- If I do a nslookup bbb.a it correcly resolves to 192.168.0.2

So what appears to be happening is that it isn't adding the dns suffix
when the domain has more than two parts (xxx.yyy).

There's something similar reported on microsoft's foruns :
http://forums.microsoft.com/MSDN/Sho...84630&SiteID=1

Any ideas how to solve this?