Try deleting your cookies and doing a disk cleanup.
That usually helps resolve my internet issues.
However...
Java is an add on. If you go to manage add ons you may be able to delete java out of that list, and then reinstall it.
The same is true for the add or delete programs list in the control panel.
Sometimes you have to delete the older versions of Java so that the newer versions will work properly. Or you could try deleting and reinstalling the java program entirely.
I think Pogo has a help page on how to do this, but if you can't find it you might try Java.com.
Hope this helped.