Clamwin mirror problem

My installation of ClamwinPortable was plagued by the mirror problem, and the only way I could make it work was to download the update files using Firefox.

Then I tried the suggestion about sending them the output of 'freshclam -v' - I found that freshclam wouldn't work because there was no freshclam.conf in the bin directory (where freshclam.exe lives).

So I created a minimal freshclam.conf:

DatabaseMirror database.clamav.net
DNSDatabaseInfo current.cvd.clamav.net
DatabaseDirectory C:\p\ClamWinPortable\Data\db

and freshclam then worked fine from the command line, and also when run from the Internet Update button on Clamwin.

Update: next day, clamwin was again failing to contact any of the mirrors, but freshclam still worked fine from the command line.