I have two. One was getting WCF to talk to a SOAP web service implemented in Java that required the WS-I Basic Profile 1.1 Password Digest, which is not provide

I have two. One was getting WCF to talk to a SOAP web service implemented in Java that required the WS-I Basic Profile 1.1 Password Digest, which is not provided in Windows Communication Foundation. It was for an integration with a third party, and I was blind to their end. There were lots of quirks to get around, but in the end it worked. The second was a weird one. A customer had a web application that was showing odd intermittent failures, but only on HTTP POST. The system was an extranet application so I could speak in detail to the users having these problems. It appeared that only certain offices were having the problem, but not all users. I had to prove that it wasn't a problem in the application. I had to prove it wasn't something in IIS. I had to prove it wasn't something specific to a client. It turned out to be a misconfigured load balancer, where the MTU size was incorrectly set. The HTTP POST errors only was the clue. Nearly all browsers send HTTP POSTs in two packets or more, even if they fit in one. GETs always go in one. When the penny dropped after weeks of pain it was extremely satisfying to see the problem solved.