[horde] Horde Database, 2 entries per device/sync_folderid in horde_activesync_state table

[Stefan Johänntgen]

There is 2 rows in the Database in table horde_activesync_state with  
"Contacts" in the sync_folderid filed. Is that right or a bug? And in  
the ActiveSync-Log find this error:

NOTICE: [Appl87048QMRA4T] Error saving state for synckey  
{4ff04768-965c-4e47-bb44-2166b0dd2a84}5: SQLSTATE[23000]: Integrity  
constraint violation: 1062 Duplicate entry  
'{4ff04768-965c-4e47-bb44-2166b0dd2a84}5' for key 'PRIMARY' - removing  
previous sync state and trying again.

Horde Groupware Webmail Edition 4.0.8, Device iphone IOS 5.1.1