I looked in the release notes, but maybe I missed it. Is it not possible to build a kernel from CentOS 4.3 (using 2.6.9-34.0.1) with HIGHMEM support turned off? This is for a machine with 512mb. When I try to build the kernel, I get _etext undefined symbol on line 100 of pageattr.c in arch/i386/mm. Linus