diff --git a/src/gtkgui.glade b/src/gtkgui.glade
index c89317c34..89765de16 100644
--- a/src/gtkgui.glade
+++ b/src/gtkgui.glade
@@ -4,8 +4,6 @@
 <glade-interface>
 
 <widget class="GtkWindow" id="roster_window">
-  <property name="width_request">85</property>
-  <property name="height_request">200</property>
   <property name="title" translatable="yes">Gajim</property>
   <property name="type">GTK_WINDOW_TOPLEVEL</property>
   <property name="window_position">GTK_WIN_POS_NONE</property>
@@ -308,12 +306,11 @@
 
 <widget class="GtkWindow" id="accounts_window">
   <property name="border_width">4</property>
-  <property name="width_request">420</property>
-  <property name="height_request">150</property>
   <property name="title" translatable="yes">Accounts</property>
   <property name="type">GTK_WINDOW_TOPLEVEL</property>
   <property name="window_position">GTK_WIN_POS_NONE</property>
   <property name="modal">False</property>
+  <property name="default_height">150</property>
   <property name="resizable">True</property>
   <property name="destroy_with_parent">False</property>
   <property name="decorated">True</property>
@@ -540,8 +537,6 @@
 
 <widget class="GtkWindow" id="account_modification_window">
   <property name="border_width">4</property>
-  <property name="width_request">440</property>
-  <property name="height_request">290</property>
   <property name="title" translatable="yes">Account Modification</property>
   <property name="type">GTK_WINDOW_TOPLEVEL</property>
   <property name="window_position">GTK_WIN_POS_NONE</property>
@@ -1752,8 +1747,6 @@
 
 <widget class="GtkWindow" id="add_new_contact_window">
   <property name="border_width">4</property>
-  <property name="width_request">317</property>
-  <property name="height_request">300</property>
   <property name="title" translatable="yes">Add New Contact</property>
   <property name="type">GTK_WINDOW_TOPLEVEL</property>
   <property name="window_position">GTK_WIN_POS_NONE</property>
@@ -2166,8 +2159,6 @@
 
 <widget class="GtkWindow" id="subscription_request_window">
   <property name="border_width">4</property>
-  <property name="width_request">550</property>
-  <property name="height_request">200</property>
   <property name="title" translatable="yes">Subscription Request</property>
   <property name="type">GTK_WINDOW_TOPLEVEL</property>
   <property name="window_position">GTK_WIN_POS_NONE</property>
@@ -2492,8 +2483,6 @@
 
 <widget class="GtkWindow" id="service_discovery_window">
   <property name="border_width">4</property>
-  <property name="width_request">400</property>
-  <property name="height_request">250</property>
   <property name="title" translatable="yes">Service Discovery</property>
   <property name="type">GTK_WINDOW_TOPLEVEL</property>
   <property name="window_position">GTK_WIN_POS_NONE</property>
@@ -2739,8 +2728,6 @@
 
 <widget class="GtkWindow" id="service_registration_window">
   <property name="border_width">4</property>
-  <property name="width_request">300</property>
-  <property name="height_request">200</property>
   <property name="title" translatable="yes">Register to</property>
   <property name="type">GTK_WINDOW_TOPLEVEL</property>
   <property name="window_position">GTK_WIN_POS_NONE</property>
@@ -2958,12 +2945,12 @@
 
 <widget class="GtkWindow" id="preferences_window">
   <property name="border_width">4</property>
-  <property name="width_request">470</property>
-  <property name="height_request">420</property>
   <property name="title" translatable="yes">Preferences</property>
   <property name="type">GTK_WINDOW_TOPLEVEL</property>
   <property name="window_position">GTK_WIN_POS_NONE</property>
   <property name="modal">False</property>
+  <property name="default_width">250</property>
+  <property name="default_height">120</property>
   <property name="resizable">True</property>
   <property name="destroy_with_parent">False</property>
   <property name="decorated">True</property>
@@ -8743,8 +8730,6 @@ Custom</property>
 
 <widget class="GtkDialog" id="change_status_message_dialog">
   <property name="border_width">4</property>
-  <property name="width_request">303</property>
-  <property name="height_request">225</property>
   <property name="title" translatable="yes"></property>
   <property name="type">GTK_WINDOW_TOPLEVEL</property>
   <property name="window_position">GTK_WIN_POS_NONE</property>
@@ -9320,7 +9305,6 @@ Custom</property>
 
 <widget class="GtkDialog" id="edit_groups_dialog">
   <property name="border_width">4</property>
-  <property name="height_request">260</property>
   <property name="title" translatable="yes">Edit Groups</property>
   <property name="type">GTK_WINDOW_TOPLEVEL</property>
   <property name="window_position">GTK_WIN_POS_NONE</property>
@@ -9489,8 +9473,6 @@ Custom</property>
 
 <widget class="GtkDialog" id="change_password_dialog">
   <property name="border_width">4</property>
-  <property name="width_request">316</property>
-  <property name="height_request">183</property>
   <property name="title" translatable="yes">Change Password</property>
   <property name="type">GTK_WINDOW_TOPLEVEL</property>
   <property name="window_position">GTK_WIN_POS_NONE</property>
@@ -9678,8 +9660,6 @@ Custom</property>
 
 <widget class="GtkDialog" id="new_message_dialog">
   <property name="border_width">4</property>
-  <property name="width_request">460</property>
-  <property name="height_request">160</property>
   <property name="title" translatable="yes"></property>
   <property name="type">GTK_WINDOW_TOPLEVEL</property>
   <property name="window_position">GTK_WIN_POS_NONE</property>
@@ -9804,7 +9784,7 @@ Custom</property>
 	  <property name="border_width">5</property>
 	  <property name="visible">True</property>
 	  <property name="homogeneous">False</property>
-	  <property name="spacing">0</property>
+	  <property name="spacing">5</property>
 
 	  <child>
 	    <widget class="GtkHBox" id="hbox2932">
@@ -10138,8 +10118,6 @@ send a chat message to</property>
 
 <widget class="GtkWindow" id="add_remove_emoticons_window">
   <property name="border_width">4</property>
-  <property name="width_request">300</property>
-  <property name="height_request">350</property>
   <property name="title" translatable="yes">Add/Remove Emoticons</property>
   <property name="type">GTK_WINDOW_TOPLEVEL</property>
   <property name="window_position">GTK_WIN_POS_NONE</property>
@@ -10258,8 +10236,6 @@ send a chat message to</property>
 
 <widget class="GtkDialog" id="new_version_available_dialog">
   <property name="border_width">4</property>
-  <property name="width_request">510</property>
-  <property name="height_request">250</property>
   <property name="title" translatable="yes">New version of Gajim available</property>
   <property name="type">GTK_WINDOW_TOPLEVEL</property>
   <property name="window_position">GTK_WIN_POS_NONE</property>
@@ -10443,8 +10419,6 @@ send a chat message to</property>
 
 <widget class="GtkWindow" id="groupchat_config_window">
   <property name="border_width">4</property>
-  <property name="width_request">650</property>
-  <property name="height_request">450</property>
   <property name="visible">True</property>
   <property name="title" translatable="yes">Room Configuration</property>
   <property name="type">GTK_WINDOW_TOPLEVEL</property>
@@ -10885,8 +10859,6 @@ send a chat message to</property>
 
 <widget class="GtkWindow" id="advanced_configuration_window">
   <property name="border_width">4</property>
-  <property name="width_request">600</property>
-  <property name="height_request">480</property>
   <property name="title" translatable="yes">Advanced Configuration Editor</property>
   <property name="type">GTK_WINDOW_TOPLEVEL</property>
   <property name="window_position">GTK_WIN_POS_NONE</property>