My Nabble RSS stopped working properly

[Capoeira Angola Warszawa]

http://n2.nabble.com/Forum-Capoeira-Angola-ft2893253.xml

My RSS worked properly for a couple of months and today it started to show old posts and topics as the latest posts and topics.
Can you help me please?

[Franklin <Nabble>]

Sorry, this is a bug.  It will be fixed in the next release.