There are two Usenet newsgroups that are particularly relevant to the PuTTY tools:
comp.security.ssh, for questions specific to using the SSH protocol;
comp.terminals, for issues relating to terminal emulation (for instance, keyboard problems).
Please use the newsgroup most appropriate to your query, and remember that these are general newsgroups, not specifically about PuTTY.
If you don't have direct access to Usenet, you can access these newsgroups through Google Groups (groups.google.com).