What to do with corrupted folders?

I have two Gmail accounts and I use disconnected IMAP with several folders 
subscribed. Sometimes, I find that one of my folders (usually a mailing list 
folder) is corrupted and on opening it throws an error:
"Unknown error. (Unable to fetch item from backend)"
What I usually do is unsubscribe that folder from the server and then 
resubscribe it again. Is there a better solution for this?
-- 
Fayaz Yusuf Khan
Cloud developer and architect
Dexetra SS, Bangalore, India
fayaz.yusuf.khan_AT_gmail_DOT_com
fayaz_AT_dexetra_DOT_com
+91-9746-830-823

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