Una gran alternativa al IE, ahora disponible de manera gratuita.

Opera 10 utiliza un nuevo formato de almacenaje para las cuentas de e-mail. El viejo correo no cambia de formato, pero el correo recibido en Opera 9 no será compatible con las versiones previas.

A un vistazo
* Bloqueo de contenido
* Ayuda de BitTorrent
* Widgets
* Editor del buscador
* Preferencias de sitio
* Instalador nuevo. Un paquete -- 30 idiomas
* Espectador de fuente integrado
* opera:config para configuración avanzada de los ajustes

**En el servidor alternativo esta el archivo para poner tu navegador Opera en español.

Que hay de nuevo:

User interface
Fixed
New web handlers tab in the Site Preferences dialog cut off, dialog not wide enough
Crash when clicking "Use master password to protect saved passwords" checkbox
Occasional crash when clicking a link or opening a new tab
Opera crashes when closing a tab that has the Star Menu opened
Can't close Star Menu after opening Folders
Opera crashes while closing feeds tab while dialog is open
Opera loses advanced download settings after restart
Opera Turbo Tooltip repeated multiple times
Wrong new reload icon
Zoom factor lost after selecting another message
Bookmark star icon is not refreshed when the page is removed from the bookmarks
Drop support for Fallback Background = 0 and Fallback Foreground = 0 in skins, fixes layout in mail window with some 3rd party skins
Can't click plugins in Mac OSX 10.5

Display and scripting
Fixed
thepokerbay.org user profile crashes onload
Crash in Carakan on WebGL benchmark
Crash on applying 3025 background images
Out of range memory access when using subpixel rendering
Secure IFrame with URL to image lowers security level to "Unsecure" (breaks Paypal checkout)
Opera freezes when loading a big session with the Tab vault extension
NFL.com crashes with admuncher installed
Overwritten document.selectSingleNode not called if invoked by helper function
load events fire on LINK elements pointing to existing local resources (link rel="stylesheet" href="file://...")
Do not cache invalid UserJS source files ("blacklisting" user javascript files on parse error)
Cannot scroll down with mouse wheel over IFRAME with scrolling=no if smooth scrolling is enabled
stylesheet not applied due to malformed gzip content
Userjs confirmation on secure pages pops up on every load of the page
Incorrect value of elements in ArrayBufferView created with byteOffset to an ArrayBuffer
Captcha Images is not refreshing automatically after site refresh
Mail, news, chat
Fixed
Opera crashes on updating mail from version 9.27
Crashes if you unpin the last message in the "Pinned" view
Check/Send (Ctrl+K) does not activate all mail accounts
Sorting problem with ungrouped mail list
Mail unread count is wrong
Users not receiving new mails because of QRESYNC. Added a way to disable QRESYNC in incomingN.txt and automatically disable it if fails to sync with QRESYNC enabled

Network
Fixed
Crash in host resolver when closing browser after loading large number of tabs simultaneously
IPv6 IP literal URLs "Invalid"

Security
Fixed
Fixed an issue where manipulation of framed content can allow cross-site scripting, as reported by Michal Zalewski; see our advisory
Fixed an issue here script events could be used to reveal the presence of local files; see our advisory