Hey Folks! I'm using Windows 7 Ultimate, 32-Bit up-to-date with all updates as of today, 21 June 2010.
The issue is that my Time format keeps changing on its own - the time displayed in the systray. I have both the Short and Long time set to be in the HH:mm format.
The systray displays the Long time and for some reason it quite often changes the format I chose.
I can't find any specific pattern to when or why it changes, but I notice it because the time will suddenly display with 12 Hour Time and AM/PM format - which I don't want. So, I go to the option to again change the time format and the Long Time option is now clear/empty. So, I again change it (now that the entry is blank I re-enter it) to HH:mm and all is well until it again reverts.