Fedora Core 6 not recognizing all of my memory

[Tim]

On Fri, 2006-12-29 at 20:50 +0530, Vivek J. Patankar wrote:
> I have a similar problem with my laptop (410MB detected instead of 
> 512MB) and dmesg told me why. I still haven't found a resolution to it
> though.

The first obvious thing that springs to mind:  RAM being divided between
some for the graphics card and the rest for the system.