I've observed this in the SPARC version as well as the Intel version. When /etc/localtime points to /usr/share/zoneinfo/SystemV/CST6CDT, the system fails to handle Daylight Savings Time correctly. However, when /etc/localtime points to /usr/share/zoneinfo/CST6CDT, things seem to work just fine. I briefly looked for some other timezone-related bugs here, but didn't see this particular one listed. Anyway, there you go.....
The one in /usr/share/zoneinfo/CST6CDT should be the one used as default. The one in SystemV is there for backwards compatibility with some utilities.The one in /usr/share/zoneinfo/CST6CDT should be the one used as default. The one in SystemV is there for backwards compatibility with some utilities.