Omea Bleg: Why Do Entries Get Scrambled?

A few months ago, I asked CapQ readers to suggest a replacement feedreader to Sharpreader, which I had used for a couple of years. Several suggested Omea, which I have used ever since. I limit it to just RSS feeds and the Notes function, but it has served me very well.
One problem appears with some regularity, however. The content of the entries get scrambled, as though the Omea database has indexing issues. Has anyone else experienced the same issue, and is there a fix available for it?