Ever since shortly after Sun’s acquisition of Cobalt three years ago, some sun.com sites have run Linux. However, more recently, Linux is being used for Sun sites that appear unconnected with the Cobalt product range. Sun sites running on Linux include supportforum.sun.com,
and srsnetconnect.sun.com.

The netblock listings indicate that all of these sites are outsourced by Sun, and it may be the case that the more the company outsources, the harder it is to avoid their sites running on Linux rather than Solaris.