http://bugs.winehq.org/show_bug.cgi?id=17783
--- Comment #18 from Evil wine@eternaldusk.com 2009-04-26 09:12:43 --- I knew this issue prevented me from seeing the community page, but didn't notice that it would also stop you from purchasing new software until I tried to buy the Orange Box today.
I worked around it by accessing the site from a web-browser, but sent a Support request asking to have the server-side issue fixed - since it can be an annoyance to Windows users as well.