Over the last couple hours, we've had nearly everyone and his/her brother in #pidgin asking about connections to AIM causing a certificate prompt. The specific prompt is for bos.oscar.aol.com. The issue here appears to be that AOL has let the certificate expire. Because our certificate validation is more strict than some other applications, Pidgin users will get this prompt at every connection until AOL installs an updated certificate.
To resolve the prompt, you can make one of a couple choices. You can choose to trust that the connection is fine even though the certificate is expired and click Accept, or you can take the safe route and click Reject until AOL replaces the certificate.
To reiterate, this is not a Pidgin problem, but an AIM server problem.
