It's Not Solved Yet

I tried to upgrade to the latest kernel available from Slackware's repository, 2.6.14.6, but still the problem occured. It always hangs up after starting the hotplug services. When i revert back to 2.6.13, everything goes fine and it will boot smoothly. It was strange, since i used the same gcc version, same /etc/rc.d/rc.modules file, and others, just a different kernel version. I suspect that the kernel itself is the trouble maker by not supportting one or more modules or the hotplug services. I need to add some modules to the /etc/hotplug/blacklist so it won't be loaded, but i don't have this kind of experience for now, so i'll start by investigating /etc/rc.d/rc.modules to find out what modules which might be the main problem.