This is tricky. We have servers using SSO and sometimes have as many as 800 to 1000 users signed on at a time. The thread problem is more likely a Webquerysave agent or image conversion problem. If you have an agent that is not exiting completely or images that are embedded in documents and translated for the Web, you will use threads quickly as the components hold the threads open. The image conversion component of Domino will not exit and will hold threads open when you have an image that does not convert correctly. It is best to attach images and reference the image via the $File reference. For best results limit Web images to 72 pixels per inch.
This was first published in March 2002