I don't think you are right on this Clive, but will ask Robert to glance at this thread.

My understanding is that all RGB is about display on a monitor, the Adobe and Apple versions including a slightly larger colour range than sRGB. Apple have always included best available resolution, colour etc as standard; hopefully PCs have now caught up. If one is going to share something on-line, I like to share the best available: keeping the enhanced RGB colour and using scaling and save quality rather than 'save for web'

For printing the image has to be converted to CMYK colour. I have found printing directly from the edited RAW file from within DPP and disabling Epson colour management is producing better prints than I have ever had. This also means one can fine tune the RAW edit doing small actual prints which has no effect whatsoever on .jpg s extracted for gallery posting.

Back to PC and Safari - the only monitor calibration I could find was a 2 frame process that seemed to have no noticable effect instead of the 10 or so stage process on the mac (and Cambridgein colour.com used to have, though Sean now seems to have given up http://www.cambridgeincolour.com/viewing.htm)

Putting my mac with original and Safari next to the PC, on the latter I find Safari correct and Firefox way out.

I am not however going to recommend Safari for any purpose other than viewing gallery pics. Re-trying it for a few days, I find it has a lot of very bad habits eg poor bookmarks, dragging progs like acrobat within Safari frame instead of as set in the proper job, no way of stopping animations, gno szpelinge czeczer and INSUFFERABLE ,won't remember my WPF log in.