Since the upgrade from Zabbix 2.2.0 to 2.2.1 we get the log entries like this:

20808:20131210:132514.061 [Z3005] query failed: [1054] Unknown column 'impi_disable_until' in 'field list' [update hosts set impi_disable_until=1386678374,impi_error='cannot connect to IPMI host: [16777411] Unknown error 16777411' where hostid=10086]
20808:20131210:132520.070 [Z3005] query failed: [1054] Unknown column 'impi_disable_until' in 'field list' [update hosts set impi_disable_until=1386678335,impi_error='cannot connect to IPMI host: [16777345] Unknown error 16777345' where hostid=10109]

Obviously there is a typo, because usually there are filed with name "ipmi_disable_until" but not "impi_disable_until" (m and p swapped).

Searching trough the source code, I found the problematic place:
src\zabbix_server\poller\poller.c line 236

<< sqlset_prefix = "impi_";
>> sqlset_prefix = "ipmi_";

Changing this and recompiling made the error go away