For a while, I've had an issue whereby it takes up to 5 minutes from the moment I enter my password in Lightdm's login screen until I can do anything with my computer. That's on Ubuntu 12.04.
During that time, I see there is disk activity, but I'm not sure how to figure out what's causing it and whether that is the real cause.
I've played around with Bootchart unsuccessfully. Any ideas on what the best way to debug this issue is?