If Gmail's mobile application doesn't let you add attachments, Opera Mini 4.1 is there to help. You can now upload photos, videos and documents from your mobile phone to Gmail, Flickr or any other site. When you clicked on a link to a file that couldn't be handled by Opera Mini, the browser wasn't able to download it to your phone. Now you can download files and save web pages to view them offline. To use this features, your Java installation needs to include JSR-75, "an optional package which allows Opera Mini to access the file system on your phone".
Opera also tests some signed versions of the browser that let you change the permission settings so you are not constantly harassed by dialogs that ask your permission before reading from the memory or connecting to the Internet. Opera Mini's blog has more details about the signed versions.
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