For the ssh configs, you should probably change /etc/ssh/sshd_config and /etc/ssh/sshd_config~ also to 0600 so nobody other then root can read them.
For the issue about MCC, please create a separate thread for that one, after having a look through the previous threads for this issue:
viewtopic.php?f=8&t=7246
viewtopic.php?f=7&t=7060
viewtopic.php?f=8&t=6918
And once again, I'll recommend reinstalling from scratch after backing up your imporant files. Currently your system is in a pretty inconsistent state.
For such a long-grown system, and per the level of system knowlegde that I'd rate you based on this thread (no offense!) it's probably
much less hassle and much less time wasted installing from scratch again and then putting your important files back.