Hello, after installing the last two security updates, my Mail programme doesn't start. The icon jumps up and down, but then nothing happened. I had a similar problem with the Help Viewer, so I cleaned the cache in my home folder, but that didn't help. I restarted my Mac, but this didn't lead to a success. Interestingly, I can't start Mail from my admin account neither. My Mac is an iBook G4 with the latest updates installed. If you need any further information, I can post the crash report which seems rather long. Any help is highly appreciated. Thanks in advance.