I've just written a new Onlamp blog entry about how to speed up test suites. It's chock full o' useful tips that I've applied in real-world situations. At the BBC, we have a test suite which used to take 80 minutes to run and now runs in about 14 minutes. We can probably get it to run in under 10 minutes. If you have a long-running test suite, these suggestions can help.
