Cheers, yeah that makes sense although there's nothing in my journal to indicate siding with the Legion, however after the main quest I did go do a whole bunch of misc crap that I had been meaning to clear for ages. I went to an Imperial Fort and one guy said "yes auxiliary?" to me so I quickly did the first Stormcloaks quest then headed to one of their camps and they were all friendly again while the Imperials were warning me to back off etc so somewhere along the line after the main quest I did something to impress the Legion and joined them without actually joining them lol. Sneaky bastards should ask first. Well, in your journal, before you ever make a move to either side, you will see two entries: Join The Legion & Join The Stormcloaks. Both should appear in Helgen, I think. Then, if you advance one side, you will success that particular entry and fail the other, causing both to disappear. But, in your current state, I'm not sure how far you can push playing both sides. I would imagine you can do it until your first serious assault against the other, but I haven't tried it and haven't read about anyone who has.