Nominatim update not working properly

Hi to all,

I have successfully installed nominatim. When I update data, i feel something may went to be wrong. My Last osmId in my DB is 2810212908.

<osm version="0.6" generator="CGImap 0.4.0 (29973 thorn-03.openstreetmap.org)" copyright="OpenStreetMap and contributors" attribution="http://www.openstreetmap.org/copyright" license="http://opendatacommons.org/licenses/odbl/1-0/"> <node id="2810212908" visible="true" version="1" changeset="21875316" timestamp="**2014-04-22T23:58:31Z**" user="SomeoneElse" uid="61942" lat="53.1106656" lon="-1.5713721"/> </osm>

Now i want to update 1 hr data. My configuration.txt :

baseUrl=https://planet.openstreetmap.org/replication/hour

maxInterval = 3600

and my state.txt

sequenceNumber=14109

timestamp=2014-04-23T04\:00\:00Z

Note: My state.txt shows 4 hrs diff(I expect 1 hr)

Also it will download data(osmosischange.osc) for 1 hr between 2014-04-23T02\:59\:00Z and 2014-04-23T03\:59\:00Z. I feel this is incorrect, bcoz i expect data from 2014-04-22T23\:59\:00Z to 2014-04-23T00\:59\:00Z

If I update this data in DB, I may loss 3 hrs data from 2014-04-22T23\:59\:00Z to 2014-04-23T02\:59\:00Z

Why this would happen? Kindly help me.