Does anyone know if this fix will be backported?

Not sure if this addresses the same problem (please let me know if not), but a fix that I’ve used for the past couple of years is one suggested in these discussions:

https://gist.github.com/2E0PGS/f63544f8abe69acc5caaa54f56efe52f
http://lwn.net/Articles/572911/

essentially changing the values of vm.dirty_background_bytes and vm.dirty_bytes. File transfers with the USB have been smooth and fast, on Plasma/Kwin, with this fix.

And this post explains how to make such changes permanent:

https://unix.stackexchange.com/a/149140/515980

Maybe this is useful for people with older versions of Plasma.

Thank you. I’m trying it out and it’s working nicely indeed. One more cool thing about it is that I can change the listening port without having to restart it. In fact, I can even change it in its config file before starting it. Useful for VPN connections that give you random ports.

Thanks for this info! I had no idea – my bad. Even though I’m an eMule veteran, I heard of Soulseek only six months ago or so. As you say, it’s sad about all these scary features, given that it’s really good for finding stuff.

I’m using Nicotine now, quite happy with it, and will give a try to aMule!

Thank you so much for this! I didn’t know about Nicotine. Works great on Linux, in fact it doesn’t crash like Soulseek’s Qt client.

Good point, I’ll login and ask.