Today, Apple released 10.9.2. Unfortunately, however, it does not seem to have resolved the issue of having to key in your mail password repeatedly, as documented here, and on this site.
More importantly, 10.9.2 seems to have introduced a new bug that surfaces during Finder copy from local volumes to remote volumes on Mavericks server 3.0.2. Copies partially fail with error message -36. This new problem was not there with 10.9.1 & Server 3.0.2.