Codenomicon strikes again :-(. In testing at the plugfest a crash bug was found in the SPNEGO asn.1 parsing code. Patch to follow.
Created attachment 6922 [details] Current patch I'm testing.
This was fixed in samba-3.6.6 as 7f42c03b79cc37745bf701aace1d008106f91578 and samba-4.0.0alpha18 as ad3ac7e3c0bdf9b93c6b831f29452fd63fe0818b