Lpc2000

I am considering an upgrade to a much higher performing machine.  The
AMD 64 bit stuff looks affordable and I understand Fedora 5 will
support it, etc.

My concern is GNU cross compilers and such for ARM & AVR projects. 
Specifically, is anything going to jump up and bite me when I try to
move my LPC projects to this platform?  Anybody out there already
doing this?

I don't have to pick this device, I could go with a high end Pentium
and that might be a safer bet but I was curious.

Thanks
Richard