Hi, I would like to be helpful, so if you need some info to reproduce the error i'll be pleased. I ran Opera next with version 12.00 pre-alpha build 1042 installed, and I still have this problem.
This is what I can read about my opera:
Version information
Version
11.50
Build
1074
Platform
Win32
System
Windows 7
XHTML+Voice
Plug-in not loaded
Browser identification
Opera/9.80 (Windows NT 6.1; U; en) Presto/2.9.168 Version/11.50
Paths
Preferences
C:U@@@AppDataRoamingOperaOperaoperaprefs.ini
Saved session
C:U@@@AppDataRoamingOperaOperasessionsautopera.win
Bookmarks
C:U@@@AppDataRoamingOperaOperaookmarks.adr
Opera directory
C:U@@@AppDataRoamingOperaOpera
Cache
C:U@@@AppDataLocalOperaOperacache
Help documents
C:U@@@AppDataLocalOperaOperaopcache
Mail directory
C:U@@@AppDataLocalOperaOperamail
Plug-in path
C:Program FilesOperaprogramplugins
C:Program FilesJavajre6in
ew_plugin
User CSS directory
Third parties
This software includes SQLite 3.6.23.
EMX sprintf and sscanf methods by Eberhard Mattes
Zlib compression library
This software uses the GStreamer multimedia framework and the GLib utility library, covered by the GNU LGPL license.
David M. Gay's number-to-string and string-to-number conversions.
This software includes parts of libyaml.
The WebP image decoder.
The libvpx video decoding library.
The Ogg, Vorbis and Theora audio and video decoding libraries.
This software includes the Hunspell spellchecker by Kevin Hendricks (MySpell) and Németh László (Hunspell).
The OpenSSL Toolkit.
Original SSLeay License.
The Elektrans.