Jan,
Thanks for the update on your config. I wasn't implying that it is your environment, only that I haven't been able to reproduce the issue with my setup. I couldn't make a statement about the module's being tested enough, as I'm not on the team, just a fellow dnn community member. I do agree with the general feeling about the module though.
With the many posts describing issues, I would not use the new module in a production site setting. There are issues being sorted out by Peter, and there are possible others yet undetected. The localization of the date is not part of this 'fix' as I understand it, not good news for you and others that need localized date, but that's all I can say.
I'm still testing, and found that the caching is still having some trouble when more than 1 module is placed on a page. I have 4 News modules on a page, and after 30 minutes, the default cache time, the first trip back only 1 of the modules refreshes and is displayed. I still need to 'refresh (F5) in IE7 to see two more feeds, and finally, another refresh brings up the last module news.
More testing going on...