I have upgraded from ver 1.8.1 to 1.8.2 and found a problem with items filtering. For example: if I want to filter the items to see only "Not supported" ones it doesn't work and no such items are found. But in the status of ZABBIX (dashboard) I can see that there are some items that are not supported . In 1.8.1 this works without any problems.
Forum thread http://www.zabbix.com/forum/showthread.php?p=62399