as a simple DB server they are hard to beat, its when everyone decides "it can do more!" and start plugging more crap into it that its performance decays rapidly. Alot of places do this to justify their make believe ROI's(result of idiocy, errr, return on investment), so instead of it doing one job very well, its does 10 or 12 jobs, all of them poorly.
Now days with big business suddenly marching backward into the 70's for terminal/server/single point of failure computing systems, it will probably make a resurgence back into the market... at which point ill be glad to leave IT.
Just me or do we have alot of techo home brewers here?