Fixed up a couple things according to comments

NzbDrone.Core/Qualities/Quality.cs

@@ -92,17 +92,17 @@ namespace NzbDrone.Core.Qualities
             return Equals((Quality) obj);
         }
 
-        public static Quality Unknown = new Quality { Id = 0, Name = "Unknown", Weight = 0 };
-        public static Quality SDTV = new Quality {Id = 1, Name = "SDTV", Weight = 1};
-        public static Quality WEBDL480p = new Quality { Id = 8, Name = "WEBDL-480p", Weight = 2 };
-        public static Quality DVD = new Quality { Id = 2, Name = "DVD", Weight = 3 };
-        public static Quality HDTV720p = new Quality { Id = 4, Name = "HDTV-720p", Weight = 4 };
-        public static Quality HDTV1080p = new Quality { Id = 9, Name = "HDTV-1080p", Weight = 5 };
-        public static Quality RAWHD = new Quality { Id = 10, Name = "Raw-HD", Weight = 6 };
-        public static Quality WEBDL720p = new Quality { Id = 5, Name = "WEBDL-720p", Weight = 7 };
-        public static Quality Bluray720p = new Quality { Id = 6, Name = "Bluray720p", Weight = 8 };
-        public static Quality WEBDL1080p = new Quality { Id = 3, Name = "WEBDL-1080p", Weight = 9 };
-        public static Quality Bluray1080p = new Quality { Id = 7, Name = "Bluray1080p", Weight = 10 };
+        public static readonly Quality Unknown = new Quality { Id = 0, Name = "Unknown", Weight = 0 };
+        public static readonly Quality SDTV = new Quality {Id = 1, Name = "SDTV", Weight = 1};
+        public static readonly Quality WEBDL480p = new Quality { Id = 8, Name = "WEBDL-480p", Weight = 2 };
+        public static readonly Quality DVD = new Quality { Id = 2, Name = "DVD", Weight = 3 };
+        public static readonly Quality HDTV720p = new Quality { Id = 4, Name = "HDTV-720p", Weight = 4 };
+        public static readonly Quality HDTV1080p = new Quality { Id = 9, Name = "HDTV-1080p", Weight = 5 };
+        public static readonly Quality RAWHD = new Quality { Id = 10, Name = "Raw-HD", Weight = 6 };
+        public static readonly Quality WEBDL720p = new Quality { Id = 5, Name = "WEBDL-720p", Weight = 7 };
+        public static readonly Quality Bluray720p = new Quality { Id = 6, Name = "Bluray720p", Weight = 8 };
+        public static readonly Quality WEBDL1080p = new Quality { Id = 3, Name = "WEBDL-1080p", Weight = 9 };
+        public static readonly Quality Bluray1080p = new Quality { Id = 7, Name = "Bluray1080p", Weight = 10 };
 
 
         public static List<Quality> All()

NzbDrone.Core/Qualities/QualityProfileService.cs

@@ -55,7 +55,7 @@ namespace NzbDrone.Core.Qualities
 
         public void Init()
         {
-            if (All().Count != 0)
+            if (All().Any())
                 return;
 
             _logger.Info("Setting up default quality profiles");

NzbDrone.Core/Qualities/QualitySizeService.cs

@@ -48,18 +48,14 @@ namespace NzbDrone.Core.Qualities
 
         public void Init()
         {
-            var inDb = All();
+            var existing = All();
 
             _logger.Debug("Setting up default quality sizes");
 
-            foreach (var quality in Quality.All())
+            foreach (var quality in Quality.All().Where(q => q.Id > 0))
+            {
+                if(existing.SingleOrDefault(s => s.QualityId == quality.Id) == null)
                 {
-                //Skip UNKNOWN
-                if (quality.Id == 0) continue;
-
-                var db = inDb.SingleOrDefault(s => s.QualityId == quality.Id);
-
-                if(db == null)
                     _qualitySizeRepository.Insert(new QualitySize
                         {
                                 QualityId = quality.Id,
@@ -71,3 +67,4 @@ namespace NzbDrone.Core.Qualities
             }
         }
     }
+}