Ok it just happened again. I got a notification there was a new game update, went to my shelf (in Firefox 29) and the game updated was "To the Moon". I clicked on the game and then on the bonus materials button which fired up GOG downloader and as it started I got the following Internet Explorer cookie popup attached below as requested. I did not close the cookie dialogue (it is still open), however the download went ahead in GOG downloader as did the game download which I clicked on next.
If you could look into this it'd be very much appreciated, thanks!
Either way, GOG's software is trying to set a cookie in my web browser and I consider that unnecessary regardless of the underlying technical reason of why it is happening. It should respect a user's privacy and not muck with their browser behind the scenes, especially if they don't even use Internet Explorer to begin with. I don't have any other option right now other than to tell the browser to block all cookies from GOG.com in the future, but this is IMHO a hack workaround and not a real solution.
I'd like to see a future version of the browser fix this problem and not set any cookies at all. GOG controls both the source code of the downloader program and any code running on their website that sets or requests cookies so it is not unreasonable to ask that it not set cookies on people's computers - especially if it is not actually using the cookies for anything as is being claimed. When people's security software/settings end up triggering warnings like this when using a product it is a bad customer experience and while it isn't going to scare me away from GOG, it might scare other people who are less technically inclined that see such messages pop up, even if they're in the minority of users and don't report the problem to GOG.
I first noticed this problem only some number of months ago, and it never happened before that so GOG must have changed something either in the downloader code or the website code or both to make it start doing this all of a sudden, or at least that's my current perception as I haven't been getting such popups since 2009 when I joined the site but rather just in the last 6 months or so.
It isn't a high priority to rush to fix ASAP of course, but I think it should be fixed during a future update and thrown into the mix.
I don't know if this is the right forum but I dowwnloaded the recently released game "Tesla Effect" and the version numbers of the installer were 22.214.171.124 now, only a few days later, the version numbers are 126.96.36.199. I cannot imagine that the devs already did an update. And if there really is an update for a GOG game do you haveto redownload the whole game again? (for Tesla Effect that would be about 15GB and my bandwith is not that great).
If you did not receive a game update notification through the GOG downloader or in your online GOG account then don't worry about it. GOG often fixes problems in the installer or other low priority things such as updating a manual or adding artwork or similar things which are very low priority updates that do not fire off game update notifications so that people avoid downloading entire games all over again for some minor thing. Generally speaking the only time you need to download again is if there is a new actual patch for a game and it fires off a notification to you that there is a game update available.
There is also a thread in the forums named "What did just update?" where GOG folk as well as others regularly post when games are updated and why they were updated. I haven't checked today but there's a good chance that someone has posted why Tesla Effect is updated there, or that they will if someone posts there asking why.
Hope this helps.