Another thing:
The items that I have entered in the F&L show up in my search results, when using the search-functionality in the website.
Does that mean the indexing should be ok?

Ehmm, maybe you misunderstood my poor English, but I meant that the items actually dó appear in the search results. So it seems there's nothing wrong with the search index.

But, the RSS-Feed still doesn't show any items. I should receive the RSS-updates in my mail, but there is only one mail there. This mail shows the first post in the F&L, with a link to the page for the full article.
I've added new items, and edited this first one, but I don't get any new mails.

Well, maybe my interpretation of RSS is totally wrong, sorry if that is the case.
I've tried the e-mail notification as well, this works perfectly. Each time I add a new item to the F&L, a message is sent to the sender entered (myself).

But RSS is something different, I thought. You can subsribe to the RSS by clicking the RSS-button, and then you should receive messages in your RSS-'channel' (what is it?), if any new updates have appeared. My RSS-updates should appear in my Outlook-'mail', in a section where I receive RSS-messages. They look like mails, but I don't know if they really are.
The problem is that this messagebox holds only one initial item. The first post in the F&L with a link to the full article on the website. No updates are given here, no RSS-updates.

I'm very sorry If I'm not able to explain it good enough.