It does seem to be crawling some of the pages. When I return to the crawl page after I get this message, there's a checkbox that says that at least some of the pages have been crawled asking if I want to continue with that session. However, it continues to time out.
I see this message: Please wait. Sitemap generation in progress...
but no progress indicators, just a blank white box, then the error in the previous post appears in the box.
Here are my current php settings:
;;;;;;;;;;;;;;;;;;;
; Resource Limits ;
;;;;;;;;;;;;;;;;;;;
max_execution_time = 900
max_input_time = 500
memory_limit = 32M