Wow, I have just updated Hardy, which updated Alsa as well!
I'm not experiencing this lags anymore! Alt+Tabs are okay, notifications don't lag anymore.. it's great!
After several tests here I conclude that this problem is gone in my AMD Athlon 2200+, VIA mother board, Nvidia video card and Sis sound.
Wow, I have just updated Hardy, which updated Alsa as well!
I'm not experiencing this lags anymore! Alt+Tabs are okay, notifications don't lag anymore.. it's great!
After several tests here I conclude that this problem is gone in my AMD Athlon 2200+, VIA mother board, Nvidia video card and Sis sound.