Bug Description:
----------------

The system cache size Warning message is not working when system time is changed.

Current Warring message depends on a file which is created when an jnlp application is imported,so when the user changes the system time to pastime for example "cachemax.timestamp" file timestamp is 10.00am and when the system time is changed to 09.00am the warning message will fail to appear,and also when the "cachemax.timestamp" file is deleted the warning message will not appear,the users usually tend to delete the tmp files in this case the warning message will not appear,

JDK-Info:
---------
java version "1.5.0-beta3"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta3-b57)
Java HotSpot(TM) Client VM (build 1.5.0-beta3-b57, mixed mode, sharing)

Steps to Reproduce:
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1.Install jre1.5.0 b57 in any testing P.C
2.Set Cache size to 1kb using JavaControlPanel.
3.Import notepad.jnlp from (http://java.sun.com/products/javawebstart/apps/notepad.jnlp)
4.Waring message will popup Displaying the cache size is low,click "OK".
5.After the notepad is installed check the "cachemax.timestamp" is created.
6.Uninstall the notepad application (javaws -uninstall).
7.Change the system time to 10min backward.
8.Again import notepad application as in step 3

warning message will not popup because the time stamp is changed,the current time is less then the "cachemax.timestamp" file time stamp,so the warning message fail in this case.

Warning message will also fail when the "cachemax.timestamp" is removed from tmp directory.

This function should be implement in different way other the depending on a file.

###@###.### 2004-07-13