Opera is now at 9.52 so please get your update now.

http://www.opera.com/

I have been using the Secunia PSI tool and it just warned me that my version was unsupported and potentially vulnerable

You might like to check it out?

https://psi.secunia.com/

OK it's a beta RC3, but I have been running it on XP SP3 for a little while with no problems.

Free for private use