Syncing gmail via IMAP is very slow starting this morning, only on one of my accounts.

Syncing gmail via IMAP is very slow starting this morning, only on one of my accounts.  The spinner next to the account name just sits there and keeps spinning.   What would cause this to all of a sudden start? 

Other gmail accounts sync fine within the same emclient.

Email is delivered to EMClient when received, but when i click on the email, it takes forever for it to pull down the message body and show me the email.