disconnect
 

each time if i try to download somthing i dc
all full network is down and need put on again
what is the problem plz

Try the tips here.
Reduce the drag caused by LW

The Java version that you'll link to from that post is now Java 6 update 2. Some people have had problems with that Java version, so it's up to you if you want to try that one or not. I'm using it & it's fine for me.

This older version of Java has worked better for a lot of people. Download
the JRE offline installer & remove your current Java before you install this one.
Archive: Download Java 2 Platform Standard Edition (J2SE) 5.0 Update 11