New bug in Opera vs blogger

When I try to create new article from the upper-right "new article" icon, I can't click it.
All the icons on the upper bar are invalid.

This only happens to Opera. I log in and log out, realizing this is the fault of blogger.
They never try to accept Opera browser.
Picasa, blogger, Google Reader, youtube....

Anyway, the reason why I turn on Opera is that the computer is running extremely slow.
Windows XP always slows down after you let it work all day.
I hate it. That's one of the reasons why I switch to Linux.
That's one of the reasons why I embrace low CPU usage softwares.