From http://www.sm56.tk:

From the RedHat 7.2 kernels the contains a few line of code in the slab.c that does not allows more usage of memory. But Jan Michael Ibanez has developed a Kludge for the SM56 Modem Driver that is available with this Tar file.

Hey! I know Jan Michael Ibanez! w00t, karma++. Visit his blog at http://www.livejournal.com/~cyberlizard/ .