pictures uploading problem

For some unknown reason, uploading pictures into my blog has not been possible in the past 3 days. Need to figure out: why?

Meantime, the last few, beautiful spring days are disappearing again, and the weather is cooler and overcast.

A LATER UPDATE: finally successful in loading pictures again.....without any explanation, except timing (and lots of patience!).

BTW : click on each photo (to enlarge in full screen) if you want to see details -