Dennis,
I just spent half an hour trying to reproduce this using the "file open" button on the standard toolbar to open the file but wasn't able to. Then for some reason I tried using Ctrl O (bound to gui-open) to open the file (instead of the toolbar button), and the window list does go wrong when Ctrl O is used, but not in either of the ways I posted about yesterday. It's easily reproducible as follows
1. create brand new SE 2007 12.0.3.0 config folder using -sc option (i.e. no hotfixes)
2. leave all settings as default
3. open files f1, f2, f3
4. use next-window so as to get alternation between files f1, f2 when next-window is used.
5. With file f1 active, use Ctrl O to open file f4 - window list shows f4, f1, f2, f3
6. Press Ctrl tab once. File f1 opens and window list shows f1, f4, f2, f3
7. Press Ctrl tab once more, File f2 becomes current when it should have been file f4.
You should be able to reproduce it in any config folder that has one file per window and smart next window enabled (plus I have the Edit A,B,C thing unchecked as default options do). I don't know if this is related to the problem I reported yesterday.
In the config folder I was using yesterday, my window list is actually showing three windows with the same file i.e. the same name shows 3 times in the window list - the file tabs show only one of these names. I don't know how to reproduce this right now but I'll keep an eye on it.
I also noticed another slight inconsistency as follows.
If you have say 5 files open and the window list shows f1, f2, f3, f4, f5 with next-window alternating f1, f2, f1, f2... then with file f1 current, press ctrl tab twice without releasing the ctrl key - now f3 is the current window but the window list shows f3, f2, f1, f4, f5 i.e. f1 and f3 have swapped places in the window list. Since file f2 is now shown as second in the window list, you might expect that next-window would go to file f2 next - but it goes back to f1 as it should, because that was the file that was last viewed.
Graeme