Ubuntu patch FYI

Just got this from a wireless lan list: "We has been struggling with a recent patch from Ubuntu that broke encrypted connections between some of our internal servers. Long story short: Ubuntu now uses GNU-TLS and the latest security patch has removed support for SHA-1. Error messages in Ubuntu or in LDAP were not explicit enough to make it obvious. Some of you may face this issue between RADIUS and LDAP (still used quite a bit for 802.1X). This issue will most likely affect internally issued infrastructure certificates! Fix: Do not patch GNU-TLS (is this a good idea?) or recreate your ROOT CA to support SHA-2 family"