Webdisk application taking time to login

Hooi Peng — Tue, 29 Apr 2014 02:10:56 -0000

Webdisk version: IntegraTUM WebDisk v0.44
Apache version: Apache/2.2.16 (Unix)
Tomcat version: Apache Tomcat/6.0.29
JVM Version: 1.6.0_32-b05
Server OS: RedHat Enterprise Linux 5
Used webbrowser + Version: e.g. Firefox 28.0
Your role: Application administrator

The webdisk login is taking time to log in. Before restart the tomcat, i took one thread dump, and in the thread dump, I can see there is one block thread.
Attached with the dump file, can anyone advise what is the block thread about? Thanks.

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Webdisk application taking time to login