If things weren't bad enough with OpenSSL, glibc and gcc already, GNUTLS and DB will get upgraded to 1.4.0 and 4.4.x also, which means many applications will break. If you don't know how to handle these things and if you depend on your system, you should disable testing for a while until the big transitions are done.
GNUTLS and DB updates in testing
May 29, 2006 - Jan de Groot