I've read the cog explaination, and yes there are reasons behind it, but not very important ones. Almost all major computer vendors started off with 8 bit machines and moved onto 32-bit machines, but they don't feel the need to reflect that in their logo. Actually, the cog is not that bad, and I'm not saying Richard Hallas is a 12 year old, only that most of the logos and design in RISC OS looks like it was created by one.
My major beef is with the ROL logo (and whole website), the RISC OS splash screen, the Iyonix logo, which are pretty bad. The ROL logo in particular can be singled out for taking about 2 mins in !Draw and being utterly, utterly terrible.
We don't really have a brand image to dilute, and the image we do have is ghastly, just gaudy websites filled with shamefully amateur logos and graphics, designed with zero professionalism. The only point I'm trying to make is this: RISC OS in many ways looks horrible, we can fix this with very minimal expense. RISC OS is pretty dated technically, but looks even more dated than it actually is, again, it would not hurt to pretty it up a bit, again could be done for a few hundred pounds on a couple of nice icon sets.