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Would be nice if the survey would be hosted in a place that doesn't get blocked - for example on Operas own servers.
But hey - no survey will bring back the power of O12 where I could and often did open 100+ tabs at a time and worked my way though them when doing deep queries on a topic. No, stash is no alternative for that, especially because I can't set it to update in regular intervals or notify me when the site reloaded with new content.
Other uses: See the comment of sgunhouse above.
PS: I forgot to mention that the notice is on the webpage, only meant as a hint and you can safely ignore it, Avast will not complain because it knows the signature of the file.
The ActiveX Plugin is for IE, you need the other one.
I just downloaded it (again) from here: http://get.adobe.com/flashplayer/otherversions/ (choose your OS and the version "for other browsers") and Avast didn't complain, despite having all checks on.
As you are running O12x64 you should check opera:plugins ( ← type that into the address bar and hit enter) afterwards and disable the non-native 32bit version of the Flash plugin (it is the one with the WOW in its path) so that only the x64 version of Flash works.
What's worse: Even if the default program would be started it wouldn't always be the thing I want. Sometimes I prefer more secure programs to open content from the web.
... or simply tell Avast not to scan incoming mails as Opera does not execute anything in mails. Checking the folder where opera stores the mails should suffice.
I personally consider the behavior of those scanners to intercept the connection without showing me the real certificate or allowing me to check from inside of the mail program harmful. I want to be able to check the certs and I want to see immediate warnings and hints because I want to be able to react.
Funny side note:
Some time ago I've got a mail from a person who sent the source code of a web page as text inside of the plain text body, with the warning that it contains some hijacker/trojan code and if I could have a look at it. Indeed it contained some heavy obfuscated evil code. At that time Avast didn't know the hijacker/trojan, but later, when they caught up, it always complained about the stored but in its form harmless mail because it sees the hijacker/trojan code in the text but does not recognize that it is harmless, while it is stored as mbs - at least as long as nobody gets the idea to deliberately make it executable, which I for sure wont 
Yes, IE is better when it comes to printing than almost any other browser.
Sadly my.opera is gone so I link to an archived article I wrote in 2012 how to set up a "print this page in IE" button in Opera, may be it helps:
Originally posted by rafaelluik:
Three. Use a bookmarks manager extension.
Four: Use O 12 until the Blink/NewUI problems are sorted out.
Five: Use a browser that works like you want. The bookmarks manager for Firefox works in a side panel, like the one in Internet Explorer (which became a really good browser in its 11th incarnation - having said that, I now go washing my mouth with soap), I really wonder if we will see a real side panel again in Opera.
Originally posted by winterwolf:
(...) Hotmail, Gmail and Yahoo Mail all offer free POP3/SMTP (...)
Not in all countries.
Originally posted by Krake:
On the other hand, as it stands, even good ratings can't be a guaranty for the software you are downloading.
Very true.
Originally posted by blackbird71:
A lot of "official" site data on old Opera versions has already gone to that bit-bucket in the sky, as can be attested by anyone who's looked lately following the website "redesign". (EG: try checking out the Opera Settings File Explained database at http://www.opera.com/support/usingopera/operaini/ ).
There is always a good chance that archive.org (waybackmachine) has spidered it:
http://web.archive.org/web/20130302151555/http://www.opera.com/support/usingopera/operaini/