i'm using SS 3.1 with the latest BlogModule.
Now i've got the problem, that a BlogEntry, that has been completely deleted - i even can't see it in the sitretree anymore, is still visible on my homepage.
Could anyone please tell me how and/or where i can remove theese old data?
If you're in the CMS you should have the ability to filter by hidden pages (including deleted) by using the filter bar next to the site tree. If you do a search for your page, you should see it in those search results and make sure you 'unpublish' the page.
Failing the search method, you'll need to jump directly into your database and delete the invalid page from the Page_Live / SiteTree_Live tables. But hopefully the search method will work for you as messing with the database directly should be left to people who know what they're doing.