README: Add KNOWN ISSUES with a minor Firefox problem.

diff --git a/README b/README
index 0178e5c8f97a7caff3f3041cb50e4751ac10bc52..e60190c8a175c0700bb83575933f1b9c29e5da87 100644 (file)
--- a/README
+++ b/README
@@ -88,3 +88,11 @@ might be used!
 If you always verify the authentication of the connection this isn't a
 problem, but if you only check if it's a HTTPS connection then this attack is
 possible.
+
+
+KNOWN ISSUES
+------------
+
+- Firefox (at least Iceweasel 3.5.16 on Debian) fails to load the error page
+  sent with the "invalid" certificate once the certificate has been accepted.
+  As the user shouldn't accept the invalid certificate this is a minor issue.