I can’t say I’ve experienced many stability issues. I’ve never had memory leaks for instance. The apps that I’ve deployed have thus far been very stable. The only time I’ve experienced problems was when we went from lighttpd to mongrel. We experienced a week of crashes that were rectified by going back to lighttpd. I don’t see Rails as having stability issues and as a former sys admin I understand where you are comming from. When rails initially came out I opted not to deploy it simply because I didn’t think there was a solid server stack supporting it. Now there are a variety of software stacks to run Rails off. I do feel that there needs to be work still to creating more of a standard in regards to rails server platforms.