Engel, my computer, just freezed. Even Linux hangs sometimes without reason but there's nothing wrong with this, I'm going to check it later.

After this introduction, I must say that everything rebooted fine again but RSSOwl, which seems to be broken, yields a "nice" error everytime I start it: "Read past EOF". It was updating feeds just before the hang.

The way to go with this is so simple but there isn't any trace about. Just copy your subscriptions*.opml files from $HOME/.rssowl2 and delete this folder.

By the way, it's curious that Google doesn't throw any result for this error with RSSOwl in the query. Instead, the error itself seems to be from Lucene.

Shine on you, crazy owl.