OS: 64 bit OS is pretty much the future due to the 32 bit OS's memory limitations.
But if you use an OS besides Windows there is no memory limitations up to 32 GB.
Kona, it is NOT about the OS anymore, but more about resource intensive apps that require lots of memory... multi-tasking when using these apps. OK, it has been a slow process because 32 bit has been the standard for so long, but more and more software developers are moving towards 64 bit... because that is the future of computing.
Not only does x64 allow greater access to the installed RAM, it also utilises the CPU more efficiently, and in this day and age of hyperthreading, dual and quad core processors, this is becoming essential to productivity for businesses, not to mention gamers and non-professionals who do graphics/video editing, etc.
Now 32 bit Linux distros may be able to read more than 4gb of RAM, but the primary factor going against them is the fact that major developers, like Adobe, Corel and Cyberlink, etc, do not put out their major/most popular softwares for them, hence people will use an OS that is compatible with their major apps. Furthermore, Linux distros have a steeper learning curve than Windows, so businesses are not going to risk using an OS that reduces productivity due to employees having to learn a non-mainstream OS.
I know that you like Linux, and I quite like the Ubuntu distro myself, but Linux is never likely to become mainstream, despite it being free to use, because users want something that works right out of the box with all their apps... and games. So until the major developers are creating Linux compatible software, it will remain an OS for enthusiasts and those who like to tinker with new toys... people who can't afford Windows, for whatever reason.
My system boots in less than a minute. You saying SSD can bring that down?
Yes, a SSD drive would reduce boot and app load times on most machines... tho obviously the greater the CPU and RAM, the better the overall result would be. My machine - Phenom II 920 @ 2.8; 8gb Corsair Ram; WD (Win 7 x64) @ 7200; Seagate (Vista x64) @ 7200 - boots into Win 7 @ 26 - 28 seconds... Vista x64 @ 30 - 32 seconds, though I imaging those time would be significantly less with a couple of OCZ Vertex SSD's configured in RAID formation.
Hehe, there I go... dreaming again! With the way things are going I might be able to afford ONE this time in 2012.