It seems I didn't do enough testing on the latest release of Mamblog so there were a couple of problems with it. I've fixed two bugs, one causing the title to not being saved and the other caused a problem with html in entries when editing. Download Mamblog 1.0 beta3 for these fixes. The only files that has changed are editblog.php and mamblog.html.php so you can just update those two instead of doing a complete reinstall.