Sent a support request two days ago and just got an answer - if you can call it that:
Due to our ongoing server upgrades and the high numbers of up- and downloads some users might experience more unavailable files than usual.
This can affect you premium account as well if you try to up- or download on a server we are currently working on.
No files are deleted and usually available again within 48 hours.
We apologuise for this inconvenience and assure we are doing our best to keep the disruptions to a minimum.
According to some our forums I checked it seems FF is now the prefered hoster for almost anyone trying to spread pirated software and movies.
One reason (maybe the only!) would be that FF has no limits like most others now.
For many uploaders it makes no sense to use a hoster with a 5GB upload limit or that limits the upload speed to 50-60kb/s, which sadly is now the case for most "good" hosters.
At this stage it seems the only way out would be to buy premium accounts at other hosters to overcome the limits FF has right now.
RS is gone useless, Uploaded and similar hosters added bad restictions and to make things worse it is almost impossible to find a suitable hoster with remote upload that is not limited to single files and actually checks if the upload was complete.
I don't know about others, but for me it is simply impossible to change my files to others hosters as my line is too restricted for that.
But what worries me most currently is the simple fact that it seems the users only care about what they can get for free and how long it takes.
I haven given up on asking for a mirror
If only every 10th user that downloaded a file would offer a mirror after that we would not have any problems anymore, but it seems to be common practise now to get everything for free and to complain if is not working as expected.
I have some files that had been downloaded almost 1000times, often re-uploaded and fixed but never got any mirror from a user.
Therefor I asked one last time for mirrors for the files you like. If you want to help others and like our work this not really much to ask I think....