I run ver 1.4.4 on an old HP laptop. Use Vector 5.8 as the operating system. Never had this problem with Fedora.
It will recognize margin settings (Document-Settings-Page-Margins) on my old documents but if I create a new document, lyx just ignores the Margin settings and always starts printing at the left side of the page.
I have run reconfigure and texhash without success. Thx.. John