Comment 37 for bug 215194

OK, got it (well, the debug output :-) working, thanks. The last two messages I see are

CalDAV: recv: <?xml version='1.0' encoding='UTF-8'?>
<multistatus xmlns='DAV:'>
  <response>
    <href>/calendars/users/axel/calendar/2e0b9500-0087-4e08-bb63-b880483c0fb9.ics</href>
    <propstat>
      <prop>
        <getetag>"ddbb339c33e6de012516a516690431c5"</getetag>
      </prop>
      <status>HTTP/1.1 200 OK</status>
    </propstat>
  </response>
[...]
  <response>
    <href>/calendars/users/axel/calendar/a4902178-1465-41ab-9ae1-ec37327367d6.ics</href>
    <propstat>
      <prop>
        <getetag>"f38036e9996d56df10039b49783c75e1"</getetag>
      </prop>
      <status>HTTP/1.1 200 OK</status>
    </propstat>
  </response>
  <response>
    <href>/calendars/users/axel/calendar/ba61862e-6ec9-4165-94ca-2fffe5a0a11f.ics</href>
    <propstat>
      <prop>
        <getetag>"eeee26c5605e6211d4f740e0f48edd79"</getetag>
      </prop>
      <status>HTTP/1.1 200 OK</status>
    </propstat>
  </response>
</multistatus>
CalDAV: send: <?xml version="1.0" encoding="UTF-8"?>
<calendar-multiget xmlns:D="DAV:" xmlns="urn:ietf:params:xml:ns:caldav">
  <D:prop>
    <D:getetag/>
    <calendar-data/>
  </D:prop>
  <href xmlns="DAV:">/calendars/users/axel/calendar/ba61862e-6ec9-4165-94ca-2fffe5a0a11f.ics</href>
[...]
  <href xmlns="DAV:">/calendars/users/axel/calendar/eb72ddf8-a764-42f9-aaab-ebecafe2f19c.ics</href>
  <href xmlns="DAV:">/calendars/users/axel/calendar/b650acf2-4e2d-4a9a-8c5f-732f0e15d1ba.ics</href>
  <href xmlns="DAV:">/calendars/users/axel/calendar/f65900c6-4e1a-4b92-9129-6e196a660775.ics</href>
</calendar-multiget>

After that it hangs with 100% CPU (on one core). So that probably doesn't help.

I now have a x86_64 debug build for linux - which doesn't show the problem :-( So to me it looks like it's windows only. I'll post my findings once I have the debug build for windows.