I have problem with drupal 7 installation (I have it locally on my PC). The page loads very slowly on every request, I have enabled Slow Queries Log and this is the output:
"Executed 626 queries in 300.88 ms. Queries exceeding 5 ms are highlighted. Page execution time was 15795.26 ms. Memory used at: devel_boot()=3.01 MB, devel_shutdown()=88.32 MB, PHP peak=92 MB."
Some more info:
The number of queries varies each request from 300-1000 !
15sec. and sometimes even more up to 70-90 seconds (but rarely) !
I have disabled the cron via "admin/config/system/cron" page.
Please help!
Start disabling custom modules you have one by one to see which is working slow. Also you can check admin/reports/status for hints, what is wrong with your Drupal instance.