I have a AMD sempron 3000 System. My plan was to install suse linux but as i bought a magazine, got dvd of slackware linux 11. I notices that the kernal version of slackware linux is much less than that of other linux distributions like redhat and suse. Moreover, I learned that slackware linux is following BSD style and others follows system V style. I had installed Suse linux 10.2 in my office.
Is is true that slackware is more efficient and faster than Suse?
Which one is better for database server like mysql?
Is there any difficulties in exchanging programs and data between these two distributions?

I have downloaded slackware linux for AMD machine. Can I expect any performance benefit by installing the same on my machine over Suse linux?

Is the lower kernal version number in slackware indicates it is behind Suse or redhat?

The kernel was the latest 2.4 kernel at the time of the release of Slackware. Slackware kept with the 2.4 kernel because the maintainer deemed 2.6 not yet ready for Slackware. However there is a 2.6 kernel in /testing on the ftp server. Remember the 2.4 kernel is still being maintained.

The lower kernel version does not indicate Slackware is behind other distributions, it indicates Slackware is more conservative. 2.4.33.3 was only released around august 2006 and Slackware 11.0 about September.

If this machine is to be used in a production environment then I would say use whatever you know best.

There are also two 2.6.* kernels on the install disk. there's a 2.6.17.13 called "huge26.s" and there's a 2.6.18 called "test26.s" both require a separate "modules" package to be installed after first boot.

I would say 'careful' before 'conservative,' but otherwise agree with phil.d.g on his second and third points.