diff --git a/thirdpart/auth/forms.py b/thirdpart/auth/forms.py
index 9bd4a89fe9..4f3b998ba0 100644
--- a/thirdpart/auth/forms.py
+++ b/thirdpart/auth/forms.py
@@ -14,7 +14,7 @@ class AuthenticationForm(forms.Form):
     Base class for authenticating users. Extend this to get a form that accepts
     username/password logins.
     """
-    username = forms.CharField(label=_("Username"), max_length=30)
+    username = forms.CharField(label=_("Username"), max_length=255)
     password = forms.CharField(label=_("Password"), widget=forms.PasswordInput)
 
     def __init__(self, request=None, *args, **kwargs):
@@ -55,7 +55,7 @@ class AuthenticationForm(forms.Form):
         return self.user_cache
 
 class PasswordResetForm(forms.Form):
-    email = forms.EmailField(label=_("E-mail"), max_length=75)
+    email = forms.EmailField(label=_("E-mail"), max_length=255)
 
     def clean_email(self):
         """
@@ -96,6 +96,7 @@ class PasswordResetForm(forms.Form):
             'token': token_generator.make_token(user),
             'protocol': use_https and 'https' or 'http',
         }
+
         send_mail(_("Password reset on %s") % site_name,
                   t.render(Context(c)), None, [user.username])
 
diff --git a/thirdpart/registration/forms.py b/thirdpart/registration/forms.py
index 64dbb803ea..f923dfed9d 100644
--- a/thirdpart/registration/forms.py
+++ b/thirdpart/registration/forms.py
@@ -29,31 +29,14 @@ class RegistrationForm(forms.Form):
     registration backend.
     
     """
-    username = forms.RegexField(regex=r'^\w+$',
-                                max_length=30,
-                                widget=forms.TextInput(attrs=attrs_dict),
-                                label=_("Username"),
-                                error_messages={ 'invalid': _("This value must contain only letters, numbers and underscores.") })
     email = forms.EmailField(widget=forms.TextInput(attrs=dict(attrs_dict,
-                                                               maxlength=75)),
+                                                               maxlength=225)),
                              label=_("Email address"))
     password1 = forms.CharField(widget=forms.PasswordInput(attrs=attrs_dict, render_value=False),
                                 label=_("Password"))
     password2 = forms.CharField(widget=forms.PasswordInput(attrs=attrs_dict, render_value=False),
                                 label=_("Password (again)"))
     
-    def clean_username(self):
-        """
-        Validate that the username is alphanumeric and is not already
-        in use.
-        
-        """
-        try:
-            user = User.objects.get(username__iexact=self.cleaned_data['username'])
-        except User.DoesNotExist:
-            return self.cleaned_data['username']
-        raise forms.ValidationError(_("A user with that username already exists."))
-
     def clean_email(self):
         try:
             user = User.objects.get(email__iexact=self.cleaned_data['email'])