yes, I use the module, but see if the php_module is active when you see your above scenario.
run apache.
open locahost (no script)
hit f5
then open Start|Programs|Accessories|SystemTools| System Information.
in the left pane open the key for Software Environment>Drivers
look for php_module in that list and see if its "active"
I have hunch that it is not at that moment.
Sounds more like either an IE problem, or httpd commit charge gone whack-o
/shrug