Well, once more I might be the only one to experience this, but maybe anyone else can confirm?
When SoulseekQt is running for 1 day or more, AND many user shares are open at the same time for browsing, I can definitely confirm that browsing the web gets VERY slow especially with sites that make heavy use of JavaScript and/or Flash.
Probably because SoulseekQt takes INSANE amounts of RAM then?
I have to add that one of my RAMs got broken and I'm currently left with only 1 GB of RAM.
However, provided that SoulseekQT is programmed to use paged memory from a swap file, this should not matter much.
Once Soulseek is fully closed and quit, things are back to normal again and also Flash applications or games will come up ionstantly (instead of taking up to 2 minutes to load!)
I'm going to monitor this a little more thoroughly by letting GKrellM run simultaneously.