> Xavier :
> I've succeeded in reproducing the bug.
> It's at least when I choose "Test links in pages
> (bookmark test)"
> I don't know if it exists in other cases.

I'll try to reproduce the issue. But the only place temporary files are being
created is with compressed files. For tested links, this should not happend
(HEAD requests) ; except for servers giving content with HEAD requests (this
is a protocol error!)

I will add an additional test to ensure that, even in such cases, no file is
left.

Regarding the strange location, this is the Microsoft's libc choice, I don't
really know why the C: root directory is sometimes choosen for this purpose
(?)