The less retention, the greater database performance. There is always an option to disable the feature and run rescan, so all deleted headers can be reexamined with the help of the undelete feature. The feature is enabled by default that can be changed too. For example win2k has a default for .nfo files which starts some irrelevant management utility. Since Deja is dead - the Google search engine is now used, although Deja search strings were more universal.
Some servers require delay between connection attempts.
There is a bandwidth meter in the task manager. Also now the task manager window remembers its position. The 'Clear history' option can be found in the edit menu. The number of selected entries is shown now in the title bar , so the number of parts in multipart attachments of the form .001, .002 etc. can be easily verified. Newsgroup list is treated differently now - the information about servers is saved, so it is possible to see newsgroups that a particular server has with corresponding numbers of articles in each newsgroup or to see for every newsgroup what servers have it and how many articles are on every server for that newsgroups.