Ok, I've found the source of my problems. Those problems were caused by mod_mono-1.1.18. Both of my linux boxes (Slackware/Gentoo) behaved that way after this upgrade. Downgrading mod_mono to 1.1.17 helped. Now, does anyone have any idea why does mod_mono-1.1.18 break stuff here? Best regards, Jurek Bartuszek