As a commenter pointed out here, there are issues installing Cincom Smalltalk on Ubuntu Linux. We've had reports from numerous people, and have been looking at the issue. The reason this is going to still be an issue (in the short term) for the upcoming release is that we only ran across this problem late in the development cycle, and didn't think it warranted holding up the entire release.

Having said that, we hope to have this solved prior to the next release.