Isnt it amazing how many people are having problems with either losing or finding their backup's. It is all too easy to just flash regardless of making sure you got at least one backup somewhere on your pc and it is said everywhere to do a backup before flashing so the mind boggles as to why people just flash without backups. Incidently many of the apps developed on this forum are the very reason the os is screwed up because they are just not written properly and not enough care is taken to check out the installs for damaging results to the os of the N900. Many if not all of the "rebooting" problems are due to the dangerous apps on the download section of this forum and the only way to correct them is as you say a proper complete re-flash. The mind boggles as to why it is not pointed out on this forum the actual danger of some of the apps available.