We discussed this a little bit before, but I was called away. Now that I have some time, I'm hoping to discuss this again and hopefully find resolution. Normally our MonetDB instance is running happily and doesn't have any problems. We've limited the number of queries being performed concurrently to the number of cores in the machine, and we do all of our inserts using COPY INTO statements. The problem is that, for no reason that we can see, suddenly MonetDB starts to perform incredibly slowly. This causes queries to stop returning, or, what used to return after less than a second starts to take over 30 seconds, and causes a timeout on our system that produces the graphs based on this information. We restart MonetDB and the problem goes away for a while. Sometimes it drops again after a short time (as little as a few hours) other times it will run fine for a few days. Does anyone have any ideas? What other information can I provide to get a closer look at why it is behaving this way? Thanks, Joseph Brower