Not so friendly stable Ruby
Went to install ruby on a RHEL4 machine and wanted to get the latest and greatest, becaue the 1.8.1 packed for RHEL4 wouldn’t cut it. So I went out to the ruby site and grabed that package marked latest stable release. I believe this ended up untaring to be 1.8.8.1, which I then  installed. Upon trying to install gems and it wouldn’t go because it doesn’t like the version number of ruby. Had to back down and get an older version of ruby and everything works now.
I don’t spend my day doing ruby nor rails and don’t deeply study the release cycle. When you put out a release and tag it “stable” I think it would be good practice to make sure it at least works with the package manager for the product.