ColdFusion Builder is completely unusable for me!
For starters, we have an NTLM proxy at work, which is not supported by ColdFusion Builder (or Eclipse).
Furthermore, all our websites are gzip compressed, which again is not supported by ColdFusion Builder.
So, back to HomeSite until these issues are resolved...
The NTLM issue is a know issue and I see you have voted for the bug. I would recommend you report a bug for the GZIP issue too.