Ok, we had it again. This time, we tracked more information.
When that bug happened, it was returned by one WWC server only. As I previously mentioned, when that happens, for that particular WWC server, it does not even go in the WWC VFP server. The garbage incoming header is returned back to the browser at the DLL level. However, when we go in WWC admin page, we see that all hits are recorded to the WWC server. I mean for all WWC servers. So, the one bugging is also recording the hit. So, this means, it goes at least somewhere at the WWC level. However, the cumulative hit for that one does not log, or at least, after 10 minutes, it only moved from 4 to 5 cumulative hits where all the other 3 servers moved from dozens of hits within the same lap time.
So, again, we request all help we can get about that one. We are also tired of that bug.