Tell me about your maintenance. Canned air every month? If over a few years, did you have or do the usual heatsink compound replacement?
Also, why not try other browsers?
And why Java?
I now use Firefox 30.0 with Windows Vista and cable internet. When I click on links (for example from Google News) or open an online pdf, the browser often "hangs" and the entire computer freezes up, sometimes for a minute or more. All I get are messages on the bottom about transferring data from various places or waiting for various things (s.ytimg is a common one). Not only can't I work in other windows (or tabs) but I can't even use any other program. Similar freezes (called Not Responding) occurred when I was using IE 9. I understand that many web pages are slow to load but don't see why I can't do any other work on my computer while I'm waiting.
Any suggestions? Thanks in advance.