Index: user.rb
===================================================================
--- user.rb	(revision 2250)
+++ user.rb	(working copy)
@@ -53,8 +53,8 @@
   attr_protected :login, :admin, :password, :password_confirmation, :hashed_password
 	
   validates_presence_of :login, :firstname, :lastname, :mail, :if => Proc.new { |user| !user.is_a?(AnonymousUser) }
-  validates_uniqueness_of :login, :if => Proc.new { |user| !user.login.blank? }
-  validates_uniqueness_of :mail, :if => Proc.new { |user| !user.mail.blank? }
+  validates_uniqueness_of :login, :if => Proc.new { |user| !user.login.blank? }, :case_sensitive => false
+  validates_uniqueness_of :mail, :if => Proc.new { |user| !user.mail.blank? }, :case_sensitive => false
   # Login must contain lettres, numbers, underscores only
   validates_format_of :login, :with => /^[a-z0-9_\-@\.]*$/i
   validates_length_of :login, :maximum => 30
@@ -84,7 +84,7 @@
   def self.try_to_login(login, password)
     # Make sure no one can sign in with an empty password
     return nil if password.to_s.empty?
-    user = find(:first, :conditions => ["login=?", login])
+    user = find_by_login(login)
     if user
       # user is already in local database
       return nil if !user.active?
@@ -183,6 +183,11 @@
   def self.find_by_mail(mail)
     find(:first, :conditions => ["LOWER(mail) = ?", mail.to_s.downcase])
   end
+  
+  # Makes find_by_login case-insensitive
+  def self.find_by_login(login)
+    find(:first, :conditions => ["LOWER(login) = ?", login.to_s.downcase])
+  end
 
   # Sort users by their display names
   def <=>(user)