Q. I am using Windows 2000, IIS5, and the log files are not reporting the correct filesize, so that the reported number of bytes sent is incorrect.
A. This is a known problem with IIS5.
The Microsoft internal tracking number is SRX 001017604315
As a workaround, set the following registry entry to be 0 (zero), using regedt32.exe,
HKEY_LOCAL_MACHINE /Software /Flicks Software /AuthentiX /1.0 /AuthentiXConfigcreate a value called SF_NOTIFY_SEND_RAW_DATA, of type DWORD, and set it to be 0. Then restart IISAdmin.
This will have the unfortunate side effect of disabling Kbyte throttling in WebQuota, but until a fix from Microsoft is forthcoming, this is the best that can be done.