infobright - Brighthouse out of memory error

We've been using Infobright Community Edition for easily over a year now, with absolutely no trouble at all. It's even sharing the server with a much bigger footprint database (a postgreSQL database). Suddenly it has started giving us errors. "Brighthouse out of memory". I've tried increasing the ServerMainHeapSize parameter from the default 600 to 4000, and the corresponding memory parameters to the middle level size, to no avail (this is the first time I've tried to tune Infobright because it has always performed flawlessly, more or less)...Read more