Hi Imar,

Thanks Imar for your kind reply.
The website is in IIS 7. Browser : IE7
They work at same office but different PC and different login.
His collegue's Order means; User A placed item A a few minutes ago, user B added his own items then user A's ordered item A appears in user B's Shopping Cart as well. But user A's screen is no problem. It looks user B's PC read user A's cookies.

Thanks agian Imar. You are always so kind to me and everyone.
HD