On loading a section:
SCRIPT5007: 'undefined' is null or not an object - framework.pack.js.jsf, line 1870 character 65
On trying one of the AJAX demos (e.g. the CommandButton demo):
SCRIPT16386: No such interface supported - framework.pack.js.jsf, line 2373 character 3
In our applications (3.2.SR1), we see an error for every Ajax request:
I believe that this is the first version of IE9 to include XMLSerializer.
I don't know enough about XMLSerializer to know whether this is an IE9 issue or a RichFaces issue.