Select failed, server replied: A000247 NO Permission denied

[Alvin]

Every few minutes a warning pops up, saying:
"<my-mail-account-here>: Select failed, server replied: A000<number> NO Permission denied"

There is no apparent problem with fetching mails from that account.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: akonadi-server 1.6.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-12.19-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu2
Architecture: amd64
Date: Wed Oct 5 14:26:44 2011
InstallationMedia: Kubuntu 11.04 "Natty Narwhal" - Release amd64 (20110426.3)
ProcEnviron:
 LANGUAGE=
 PATH=(custom, user)
 LANG=C
 SHELL=/bin/bash
SourcePackage: akonadi
UpgradeStatus: Upgraded to oneiric on 2011-10-05 (0 days ago)

[Alvin (alvind)]

Adding a screenshot. Is there something else I can do?