Skills needing strengthening very fast
Recently I've had to practice a lot more because many of my skills are becoming ungolded. Normal, right? Not really. Skills that I had practiced the day before were needing strengthening, as well as skills right at the top of the tree. the ones that I learned the day I started Duolingo. Explanations from anyone? Also, to Duolingo, if this is part of your update, this is forcing me to "binge-learn" which is exactly what you didn't want users to do!
It seems to vary a lot by language. I am also having trouble with keeping Italian golden, at this point I am considering giving up on that since I'm tired of redoing the same lessons over and over, but on the other hand my German tree seems to be quite easy to maintain. Subjectively I think that my knowledge of Italian is quite a bit better than that of German.
Yep, I have the same problem. It's gotten to the point where I sometimes leave the skills to decay a few days and then do them, but they'll need strengthening a couple hours later (or a day, if I'm lucky, but no longer than that). I always do well on my timed practices (18-20 correct answers) so I really don't get why I apparently have to repeat them so many, many times...