I am currently unable to download files in my firefox browser in general. The only way that I can download is to use the IE Tab file extension to convert a Firefox tab into an embedded Internet Explorer tab. This seems to fool the browser. Places where I have had the problem include downloading files in regular Firefox tabs from flickr.com and downloading the latest update for my Adobe Flash Player. These examples all worked flawlessly in the embedded tab with the IE Tab file extension.
Can you detail the problem a little more? What does/does not happen when you try downloading something? Does it immediately say the download has finished, does it do nothing at all?
Did you mean that only those two website failed to downloading files ?
The later one should be fine as you could download it from adobe web site and install directly from the desktop.
For the flicker, can you detail it a bit. What messages do you see it both for type of typical / error.
1. Are you on the latest version?
If not, upgrade first.
2. Does this issue still occur with all extensions disabled?
If not, turn them on one by one until you find the cause.
3. Can you download something by going to a download link? What happens if you type a downloadable url into the address bar?
Yet another place where Firefox makes surfing foxing difficult when it should be easy. Stick with IE mate - if we'd all done that then these annoying minority software providers would have died off years ago and everybody's life would be a damned sight easier.
Maybe some virus tweaked it around or something.