Try these two things next, however I must say that I sometimes I get those red x's also, and I'm all up to date on everything. I think sometimes my internet connection and speed (I have a very slow DSL connection) has something to do with it, because when I check back, I can see the picture just fine:
Method 2:
You may also optimize Internet Explorer and check if that helps. Follow the link given below and run the ‘Fix it’ given in the article.
How to optimize Internet Explorer
http://support.microsoft.com/kb/936213
Method 3:
Also update JAVA version for your computer. Follow the link given below.
http://www.java.com/en/download/manual.jsp