I really don't know what the problem is...

I have always included a simple Time_Date Widget in the zip with the weather widgets I uploaded and I always send them out to be tested before uploading. Just this week someone left message on the " Deck The Halls " Time Date Widget that the display was blank.
This was the first time anyone had this problem to my knowledge. I left them directions to import / export the widget ( usually fixed missing clock hands ) Also, I left directions to clear that one widgets cache - long story short, clearing cache worked for them and fixed all 3 they were having trouble with.
Now - I have a weather widget that has a time_date widget in zip called " Holiday Cheer " thats still in mod que - 2 moderators have said the time_date was blank..I havent heard back from them if clearing cache worked yet - but what is causing this suddenly ?

I know clearing cache is simple but is it something I'm not doing or has something updated to cause this change ?

Thanks in advance.