Photobox colourspaces, help an ignorant fool please!

[Bluelion]

Hello guys and gals.

Could someone explain to this novice what he's doing wrong uploading some pictures to photobox please? They are all coming out looking like a negatives, eg:

Looking through the photobox help system, I see the following:

If your images have been saved in CMYK colourspace they will appear in reverse on our website. They need to be resaved in standard RGB colourspace and then uploaded again. Please note that if they are in CMYK they cannot be shared or printed.

The problem is - I think they are RGB format! Or at least sRGB, the only option which sounds RGB'ish from Bibble. GIMP specifically says they are colour profiled with :"sRGB IEC61966-2.1 Copyright (C) 1998 Hewlett-Packard Company".

Is this some special brand of RGB and not what photobox is expecting? Any suggestions as to what I'm doing wrong? Do I just need to save them in the Gimp, upload and hope for the best? An example of one of the photos is here (and yes I know the orange is blown!):

http://www.bluelion.org.uk/forumImages/ocuk/dutch_f16_riat_2009.jpg

I'm completely in the dark when it comes to colourspaces. I thought the whole point of jpg was it was a photo standard.

Thanks in advance.

 

[Bluelion]

Nevermind I think I just found the answer. sRGB is not "standard RGB" it appears, at least no in Adobe terminology.
http://www.cambridgeincolour.com/tutorials/sRGB-AdobeRGB1998.htm provides an explanation which I don't understand, other than the note that I probably should be aiming at Adobe RGB rather than sRGB.

Nevermind me