They expect users to endlessly download and apply patches and fixes. 6.1 was still shipping with the old Berkeley print spooler, a real pain, while other distributions have been shipping lprNG for years. Hard core Linux enthusiasts just don't consider printing to be important. We Recommend Business should avoid Red Hat Linux, but most especially avoid any .0 release. Their .2 releaes are considered pretty stable.
Caldera makes a very fine, tested and consistent distribution speciffically for business use.
Official Debian releases are also quite clean, though not as business oriented as Caldera. Our own experience is similar. Unfortunately Red Hat is very good at marketing, and concentrates very heavily on it, so once again, an inferior product is the market leader.