I have a slightly older laptop running Ubuntu 11.10. It runs fine, but frequently, when I start it up, the CPU monitor in my Gnome Panel shows 100% usage for for what can be up to five minutes or so.
It seems that the offending process is update-apt-xapian-index, which, if I understand correctly, is the update manager checking for updates.
I have gone into the update manager settings, and selected to never check for updates. I'll do that manually when I feel like I have the time to leave the laptop running for that.
However, despite my selection, this still happens. Roughly 50% of the time or more, when I start my laptop, it runs update-apt-xapian-index.
How can I get the update manager to respect my settings, or at least to get this process to stop eating my CPU cycles?