Well I have increased the setting in php.ini file to what is listed below and still no change....all it does it sits there with the header saying "Please wait. Sitemap Generation in progress" nothing is happening within the window...does not show pages scanned or anything...is there any other information that could be the problem?

max_execution_time = 300 ; Maximum execution time of each script, in seconds
max_input_time = 120 ; Maximum amount of time each script may spend parsing request data
memory_limit = 32M ; Maximum amount of memory a script may consume (8MB)