As some might have noticed GMail was updated this morning. As usual this broke the standard view Konqueror, but only if you use the recommended method of spoofing as Firefox.
Fortunately I traced it down and fixed it in no time at all :D
Here is the patch for your convenience (apply in kdelibs/khtml):
--- /home/carewolf/html_elementimpl.cpp 2007-05-18 10:48:33.000000000 +0200
+++ html/html_elementimpl.cpp 2007-05-18 10:50:36.000000000 +0200
@@ -562,6 +562,13 @@