Report doesn't show on "last week" criterion

[Ramata]

Hi,

I'm using OTRS 3.2.4 on CentOS 6.2. When I run a report(Statistic), I configured for "last 1 week(s)" or "last 2 week(s)". Then it didn't show any result.

Later I changed to "last 7 day(s) or last 14 day(s); I could see a result.

Any idea to solve this or is this a bug?

Thanks