I just bought a Samsung CLP-315W (mostly the same like CLP-315 but with wlan support) and according to splix docs, this printer should work.
When trying to use splix (2.0) with cups 1.4 on my gentoo system, the printer does output an error message stating that I should use a proper SPL-C driver.
Did anyone here manage to get a CLP-315 running with splix? And if yes, how? I'm quite confused with that, because even the samsung unified printer driver (from their homepage) does not archive acceptable results (bad quality output).