[NTG-context] cont-sys.mkiv in texlive 2011

Hi, I have installed tl-2011 a few days ago. Context mkiv runs ok. But to configure page size I put a few commands in cont-sys.mkiv under home:.texlive2011/tex-config which is the result of mtxrun --expand-path TEXMFCONFIG. However, the file has no effect on context and nor is it found by mtxrun cont-sys.mkiv. TEXMF is found as: home:.texlive2011/texmf-config:home:texmf: !!selfautoparent:texmf-config:!!selfautoparent:texmf-project: !!selfautoparent:texmf-fonts:!!/usr/local/texlive/texmf-local: !!selfautoparent:texmf-dist:!!selfautoparent:linux-64:!!selfautoparent:texmf (one line) What do I miss? Thank you, Eythan