I just noticed that the Blogshares Price Tracker has not been updating for a couple weeks. When I looked into it, I discovered that something happened on the server so that the include files were not being found. A Dreamhost tech pointed me to their wiki page about cron jobs, where I found I had to change the path to PHP.

After I got the updates going again, I rewrote a few key parts that were making the price tracker very slow. There were some SQL queries that were inefficient, so I rewrote those, and moved some data into different tables. Now the industry listing and details pages are much faster. I made the graphs a little faster, but they are still way too slow. The problem is that the graph script queries a table with over 10 million rows. I'll try to think of some ways to speed it up.