slider in 1.5.3 ui broken?

slider in 1.5.3 ui broken?


Error: curHandle.data("mouse") is undefined
Source File: file:///C:/temp/ui.slider.js
Line: 238
This is using firefox 3.0.6
and these includes
<SCRIPT TYPE="text/javascript" SRC="jquery-1.2.6.min.js"></SCRIPT>
<SCRIPT TYPE="text/javascript" SRC="ui.core.js"></SCRIPT>
<SCRIPT TYPE="text/javascript" SRC="ui.tabs.packed.js"></SCRIPT>
<SCRIPT TYPE="text/javascript" SRC="ui.slider.packed.js"></SCRIPT>