Software :: Mythwelcome - Auto Shutdown And System Clock Not Working Properly

I installed Mythbuntu 9.04 about 9 months to a year ago and (for the most part) I haven't had any problems with mythwelcome, automatic shutdown or the system clock. The "for the most part" relates to the fact that the clock on mythbuntu has always been 4 minutes fast. Then, just last week, the system started acting up - for some reason the system clock changed to 8-10 minutes fast (6 minutes faster than it was previously). To fix this problem, I have tried manually setting the "time and date" setting, and I have also tried setting the "time and date" setting to sync with an internet server. Lastly, I tried changing the system time through the motherboard bios. In each situation, mythwelcome would initially start up with the correct time. Then, several seconds later, the time shown in mythwelcome would change to being 4 minutes fast (as I described above). The time would also be 4 minutes fast when I enter the frontend.

I was willing to live with this, but the weird part is that when I start the system now (assuming I don't have any programs scheduled to record), mythwelcome boots up fine and I see the indication that "MythTV is idel and will shutdown in XXX seconds". Then, it flashes to "MythTV is idle" - like it used to; except now, it doesn't flash back to the countdown for shutting down mythtv. One time when I started the system when I was adjusting the time as mentioned above, I noticed that mythwelcome went to the "MythTV is idle" around the same time it changed the clock to 4 minutes fast - I think there is definitely a correlation here.

I checked out all the settings and nothing else has been changed that would otherwise affect MythTV from shutting itself down. The other interesting part is that I can get the shutdown countdown back if I go to "Utilities / Setup", "Setup", and "Mythbuntu". In the popup screen I choose "MythTV Configuration" and select "Launch MythTV Setup". I get a popup box that says that the mythbackend must be closed (as expected). Then I immediately exit mythtv-setup and the system runs "mythfilldatabase". I exit the Mythbuntu Control Centre and exit the frontend. When I get back to mythwelcome, the shutdown countdown comes back.