akonadi_agent_server crashed with SIGABRT in raise()

[3vi1]

Happens every reboot.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: akonadi-server 1.5.1-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Sun Mar 27 21:40:14 2011
ExecutablePath: /usr/bin/akonadi_agent_server
ProcCmdline: akonadi_agent_server -session 10e5cf7475000129262839300000018590003_1297286495_219110
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Signal: 6
SourcePackage: akonadi
StacktraceTop:
 raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
 abort () at abort.c:92
 qt_message_output (msgType=<value optimized out>, buf=<value optimized out>) at global/qglobal.cpp:2282
 FileDebugStream::writeData(char const*, long long) ()
 QIODevice::write (this=0x1503d70, data=0x14cfc98 "If you started akonadi_agent_server manually, try 'akonadictl start' instead. ", maxSize=<value optimized out>) at io/qiodevice.cpp:1362
Title: akonadi_agent_server crashed with SIGABRT in raise()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin audio cdrom clamav dialout lpadmin plugdev pulse-access sambashare users vboxusers

[Apport retracing service (apport)]

StacktraceTop:
 raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
 abort () at abort.c:92
 qt_message_output (msgType=<value optimized out>, buf=<value optimized out>) at global/qglobal.cpp:2282
 FileDebugStream::writeData (this=0x1503d70, data=0x14cfc98 "If you started akonadi_agent_server manually, try 'akonadictl start' instead. ", len=78) at ../../shared/akdebug.cpp:60
 QIODevice::write (this=0x1503d70, data=0x14cfc98 "If you started akonadi_agent_server manually, try 'akonadictl start' instead. ", maxSize=<value optimized out>) at io/qiodevice.cpp:1362