Dit is een test release, 149c is nog de 'normale' Soulseek. 150 is de 'Isle' versie. Men wil bij slsk namelijk meerdere 'eilanden' aka servers maken zodat de oude server niet steeds volgepoept wordt door duizenden users.
Blogspot:
We've reached a roadblock. The main server already simultaneously supports more than sixty thousand users and we just can't figure out any other ways to make it take more without becoming congested. This in turn affects the server's ability to process new logins, and probably even worse, severly restricts its ability to distribute searches. Testing and profiling the server software is extremely difficult because it's very busy 24 hours a day. So the next natural choice would be to start branching out, start creating new servers. Soulseek Isle is the very first step in that direction. While it is only a tiny patch over the original Soulseek client, we're hoping it would prove useful in starting the separation process.