I tested the latest Twitter data source component with demo application. I'm getting the following stack in the log:
Caused by: java.text.ParseException: Unparseable date: "Mon Nov 28 10:25:02 +0000 2011"
at java.text.DateFormat.parse(DateFormat.java:348)
at com.ibm.xsp.extlib.sbt.twitter.TwitterDataSource$TwitterDataBlockAccessor.loadBlock(TwitterDataSource.java:139)
I'm using Turkish regional setting on my test server. I didn't have time to test it with Turkish locale, but it seems like a regional settings problem.