We have been experiencing application performance issues today. We are working on addressing the issue. The effects can be seen in slow system performance and possible email send delays.
This issue is specific to clients on one database server only.
Update, Feb 21, 7:37 PM EST (UTC -5):
This issue only affected clients on one DB server. The server resources were being over-utilized by a system process. We terminated the process, which immediately freed up resources.