At work I am building and will be responsible for maintaining 64-bit Centos 5 systems. For desktop use, I'm debating between 32 and 64-bit versions. I know such applications, such as flash for firefox, are first honed for 32-bit systems, then evolve for 64-bit. What other obstacles could I expect to face _if_ I chose 64-bit over 32-bit for the desktop? I'd be installing on an 8 GB dual core high-end Dell desktop. Thanks. Scott