Firefox Unknown File Size

[Shea]

I'm sure all you other firefox users have noticed this before....when you download a file, in the downloads dialog it says "unknown file size". I have done some tests and found out that the file size is displayed correctly with Proxomitron bypassing all filters. So there must a filter or something that is interferring with firefox getting the correct file size. Does anyone have a solution to this?

[Shea]

I found the culprit!

It was this filter, which I think is from Kye-U's filter for the WMF exploit:

Code:

[HTTP headers]
In = FALSE
Out = TRUE
Key = "URL: All File Extensions Force Filter (Out)"
URL = "*.*"
Replace = "$FILTER(true)"