Minor tweaks resulting from switch to iperf.

event/linktest/linktest.html

@@ -48,7 +48,7 @@ To run linktest, select a Linktest test level from the dropdown on the
 <br>
 <li> <a href="#Level4"><b>Level 4</b> - Bandwidth</a>: If bandwidth is
      important in your experiment, select level 4. Be warned that the
-     bandwidth test takes up to 40 seconds per link. <b>Also note that
+     bandwidth test takes up to 20 seconds per link. <b>Also note that
      not all bandwidths can be accurately measured</b>. If this
      happens, a warning will be placed in the log file for each link
      that is out of range for bandwidth testing. 
@@ -89,7 +89,7 @@ make sure you take a closer look if linktest reports failures!
 
 <li> Linktest can take a <b>long time</b> on large experiments. Even
      on very small experiments (5-10 nodes), doing the full bandwidth test
-     can 3-4 minutes. You should probably <em>not<em> do bandwidth
+     can add 2-3 minutes. You should probably <em>not<em> do bandwidth
      tests at swapin on any experiment over 20 nodes unless you are
      prepared to wait a <em>long</em> time for the experiment to swap in.