I have been having the same problem. I just drew a pic for the holidays competition. I tried to get it on the website and when I went to the page to click what competition I wanted to save it to, parts of that page was missing.
This happens a lot and only recently like within the last few days. I also noticed that when I am Java draw and using the tools the programs almost freezes up, I wait for a while and then it is ok. Is this common with Java?