problem with session expire..

 hi...
m having prob with session expire...in my webconfig i am usinh this code:
<authentication mode="Forms">
    <forms name=".MOD" protection="All" defaultUrl="~/Home.aspx" loginUrl="~/Login.aspx" path="/" slidingExpiration="true" timeout="2"></forms>
    </authentication>
    <authorization>
      <deny users="?"/>
    </authorization>
<sessionState mode="InProc" stateConnectionString="tcpip=127.0.0.1:42424" sqlConnectionString="data source=127.0.0.1;Trusted_Connection=yes" cookieless="false" timeout="2"/>

<location path="images">
    <system.web>
      <authorization> ...