EXCESSIVE LOGGING

I had over 1.4 gigs of logs before I noticed... you must run BleachBit as root (from menu not desktop icon) to clear your old (rotated) log files... corrected in 9-11R2. For the majority of user a full-blown IDS (intrusion detection system) is probably a bit much too, so:

sudo apt-get purge tiger

I only use it for occasional auditing so install if/when you need it.