openSUSE 11.2, KDE 4.3.4
I usually shutdown system from menu and i don't close any apps before this. But when i turn on computer, opera runs twice during session restoration and i get this message:
"It appears another Opera instance is using the same configuration directory because its lock file is active"
One opera instance loads normal with all previous tabs and another opera instance shows me that message.

None of others apps behave such.
How can i fix that problem?