Sometimes I see a progress bar "Saving snapshot" running in the IDE, but then the "slowness detected" message does not appear, and the bee does not appear. The uigestures file in the userdir contains the following entries, if that's useful:

...
<record>
  <date>2010-05-10T16:09:53</date>
  <millis>1273500593140</millis>
  <sequence>47154</sequence>
  <logger>org.netbeans.ui.editor.completion</logger>
  <level>FINE</level>
  <thread>14</thread>
  <message>COMPL_INVOCATION</message>
  <key>COMPL_INVOCATION</key>
  <catalog>org.netbeans.modules.editor.completion.Bundle</catalog>
  <param>false</param>
</record>
<record>
  <date>2010-05-10T16:09:58</date>
  <millis>1273500598438</millis>
  <sequence>47171</sequence>
  <logger>org.netbeans.ui.performance</logger>
  <level>CONFIG</level>
  <thread>158</thread>
  <message>Snapshot statistics</message>
  <param>1273500594415</param>
  <param>Samples</param>
  <param>401</param>
  <param>Average</param>
  <param>9.997157107231924</param>
  <param>Minimum</param>
  <param>1.517</param>
  <param>Maximum</param>
  <param>53.734</param>
  <param>Std. deviation</param>
  <param>3.842379603508269</param>
</record>
...