Probably not the correct place, but I really don't feel like making an account on codeplex to report this:
operating system : Fedora 9
browser version : Firefox 3.0.11, running no script 1.9.9.45, adblock plus 1.1.1, split pannel0.8.8 and novell moonlight 2.2
On trying to load the page I get this error message:

Argument is out of range.
at Mono.NativeMethods.collection_get_value_at (IntPtr instance, Int32 index) [0x00000] in <filename unknown>:0
at System.Windows.PresentationFrameworkCollection`1[T].GetItemImpl (Int32 index) [0x00000] in <filename unknown>:0
at System.Windows.PresentationFrameworkCollection`1[T].get_Item (Int32 index) [0x00000] in <filename unknown>:0
at System.Windows.Controls.Accordion+<>c__DisplayClassd.<UnselectItem>b__b (Int32 i) [0x00000] in <filename unknown>:0
at System.Linq.Enumerable.Count[Int32] (IEnumerable`1 source, System.Func`2 selector) [0x00000] in <filename unknown>:0
at System.Windows.Controls.Accordion.UnselectItem (Int32 index, System.Object item) [0x00000] in <filename unknown>:0
at System.Windows.Controls.Accordion.ChangeSelectedIndex (Int32 oldIndex, Int32 newIndex) [0x00000] in <filename unknown>:0
at System.Windows.Controls.Accordion.OnSelectedIndexPropertyChanged (System.Windows.DependencyObject d, DependencyPropertyChangedEventArgs e) [0x00000] in <filename unknown>:0
at (wrapper delegate-invoke) System.Windows.PropertyChangedCallback:invoke_void__this___DependencyObject_DependencyPropertyChangedEventArgs (System.Windows.DependencyObject,System.Windows.DependencyPropertyChangedEventArgs)
at System.Windows.DependencyProperty.InvokeChangedCallback (System.Windows.DependencyObject obj, System.Windows.DependencyProperty property, System.Windows.PropertyChangedCallback callback, System.Object old_obj, System.Object new_obj) [0x00000] in <filename unknown>:0
at System.Windows.DependencyProperty.UnmanagedPropertyChangedCallback (IntPtr dependency_object, IntPtr dependency_property, IntPtr old_value, IntPtr new_value) [0x00000] in <filename unknown>:0
at System.Windows.DependencyProperty.UnmanagedPropertyChangedCallbackSafe (IntPtr dependency_object, IntPtr propertyChangeArgs, Mono.MoonError& error, IntPtr unused) [0x00000] in <filename unknown>:0
Clearing that dialog box, I still have the normal splash-screen for RAWR, however the two hyperlinks at the bottom do not work On closing that dialog box I do have the main application UI presented, and mouse-overs do show the tool-tips for the default items, however there is no black background
Finally, attempting to use the File | Load from Armory menu option causes my entire browser to crash.
I'm going to guess that all this behaviour is do to a buggy implementation of Silverlight / Mono for Linux. I'll have to attempt this using Firefox on a Windows system.