We recently moved the website of one of our customers to a new server. The site was at first running perfectly fine, but after a while, the w3wp process related to the website started using 50% to 70% of the CPU power permanently.
I tried to delete some temporary indexing files in App_Data\Temp. I stopped the server, deleted the files and then restarted the server. The CPU usage was down to normal levels again (here and there a peak of 10%). But after 15 minutes it started again to eat up 50-70% CPU power.
I am completely stumped at what the problem could be. Do You have any ideas?