Woah, 3 in a row..
As for 64 bit, i've done some research on my laptop, and i came to the conclusion that Slamd64 is a bit unstable at the moment, but they're working on it.
But i mean i couldnt even get it to install properly... Segmentation faults even during installation.
If you want a good 64bit distro, i highly recommend Gentoo. Otherwise, stick to the 32bit Slack 10.x until Pat upgrades to 64bit (which wont happen for quite a while from what i've read)
But if you ahve a 64bit proc, might as well get everything out of it.. I got some really big performance and power push that way.