Classic ASP site is hanging occasionally

[guidorico]

We have a classic ASP website on IIS 7.5. Users are experiencing slow response randomly. When that happens, user cannot do anything for a few minutes which is very frustrating.For example, I can open home page, then click few times through categories, and then website simply stops responding. I didn't notice any rule when site will stop responding. Sometimes, it is working fine all time, sometimes it just stops.When it is responding slowly, I can wait few minutes and then get the page. I tried to stop page load, and refresh the page, but that is not helpful. When this happen, I can't refresh the page, and I can't go to other page. Each page on site is not responding.But, if I open other browser, let say I am in Chrome and open IE, site in new browser is fast again.My only clue, if I delete ASP session cookie on client side, then loading of pages is fast again in same browser. So, it is obviously something related to ASP session cookie. Can IIS or ASP engine somehow block ASP session for some reason?I noticed there is more chance for slow response if I click through site fast. It looks like after few fast clicks server maybe refuse that session for some reason?Also, not sure if it is helpful and related to problem, I often see numerous different ASP session cookies. I suppose it should be only one session cookie per user in browser, but I see several different session cookies with different values. Anyone ever saw something similar? Any idea how to resolve these occasional slow responses?Thanks!