I just tested this and it is working.. in fact, it is the same now as it was for the Nov/Dec 08 releases.
The Skin change times have been linked with the gamma times for quite awhile now.. so you must use a built in gamma mode in order to use auto-skin switch -- you can however leave the gamma settings to where the day and night gamma are the same (basically disabling gamma changes).
The other thing to notice is that in RRConfig, the NIGHT setting is ON TOP of the DAY setting, and that the NIGHT START TIME should be LATER in the day than the DAY START TIME (for obvious reasons). If it's backwards, then it's never going to switch skins (and likely will always use the night skin).
The settings you showed seem to be ok, but I advise to review your gamma settings, and possibly verify in RR.INI that the day/night settings are set as intended. The only other catch is to be sure the day/night time are at least 2 minutes apart (to ensure RR has enough time to switch in between the given times).