Comment 2 for bug 562261

The init_creds_step API in question was introduced between 1.7.x and 1.8-alpha1 (so, during the Lucid development cycle):
  http://git.debian.org/?p=pkg-k5-afs/debian-krb5.git;a=commitdiff;h=64d0958
and fixed between 1.8.1-beta1 and 1.8.1-beta2:
  http://git.debian.org/?p=pkg-k5-afs/debian-krb5.git;a=commitdiff;h=d3674eb

It doesn’t look like any other packages need to get rebuilt; it’s a change in semantics, not signatures. (But yeah, we should get this fixed before new users of the API start depending on the incompatible semantics.)