I installed Notes 8.0.1 on Ubuntu 8.04 Gold. Whenever I launched the client, I would get the following error:
“Could not initialize the application’s security component. The most likely cause is problems with files in your application’s profile directory. Please check that this directory has no read/write restrictions and your hard disk is not full or close to full. It is recommended that you exit the application and fix the problem. If you continue to use this session, you might see incorrect application behaviour when accessing security features.”
Turns out to be a known issue with the eclipse package on Ubuntu.
The problem can be fixed by creating the directory $HOME/.mozilla/eclipse manually.