A reminder that addons, extensions, and other bolt-on software capabilities aren’t free:
It was a maddening bug. On my machine, and mine alone, our web based application slowed to a crawl when I chose a particular option. No one else could recreate the bug.
As I was showing the bug to the developer, we had a hunch, checked my add-ons, and turned off about half of them. The problem went away. Now I had a hunch about where the problem was. I turned on all the add-ons except LongURL Mobile Expander. The web application was working properly again, and I had my culprit.
It’s kind of a shame, because LongURL performed a useful function: with it installed, when you hover over a link to tinyurl.com, bit.ly or one of the other URL shortening services, it looks up the link and shows you the destination in a tooltip–so you can tell if you’re going to get RickRolled, essentially. Useful, but not at the cost.