Okay, so, I always wordered why I can't log-in to LFS Wiki... Now, after a few minutes of investigations, I found the problem. In fact, as long as you have brackets on your user-name ( [ or ] ), it will keep saying "Login error : You have not specified a valid user name" if you try to log-in.

It's a really annoying problem, and I suppose we can't change that, as I assume that Wiki just can't deal with some caracters. But if you plan to get a license and want to improve LFS Wiki, you really shouldn't put any brackets in your user-name.

please try to login now. I've made some changes to the wiki code so [ and ] are now accepted. Let me know if that poses any other problems elsewhere in the wiki.

Quote from Victor :

please try to login now. I've made some changes to the wiki code so [ and ] are now accepted. Let me know if that poses any other problems elsewhere in the wiki.

It seems to work now. Thanks Victor !