Try going into the profiles tab on your template manager. Edit the default item in the Layouts management and add the line highlighted in red below
<?xml version="1.0" encoding="utf-8"?>
<layout name="desktop">
<stylesheets>
</stylesheets>
<blocks name="head">
<block name="extra-head" type="extra-head"></block>
</blocks>
<blocks name="top" style="xhtml">
<block name="absolute" type="modules" style="raw">absolute</block>
<block name="top-panel" type="modules" style="raw" main-inner="1">top-panel</block>
<block name="header" type="header" main-inner="1"></block>
<block name="mainnav" type="mainnav" main-inner="2"></block>
<block name="cpanel" type="usertools/cpanel"></block>
<block name="topsl" type="spotlight" main-inner="1">user1,user2,user3,user4,user5</block>
</blocks>
<blocks name="middle" colwidth="26" main-inner="1" fixheight="1">
<block name="content-mass-top">content-top</block>
<block name="right1">left,right</block>
</blocks>
<blocks name="bottom" style="xhtml">
<block name="content-mass-bottom">content-bottom</block>
<block name="bot-banner" type="modules" no-main="1">bot-banner</block>
<block name="botsl2" type="spotlight" main-inner="1">user6,user7,user8,user9,user10</block>
<block name="botsl3" type="spotlight" main-inner="1">user11,user12,user13,user14,user15</block>
<block name="navhelper" type="navhelper" main-inner="1"></block>
<block name="footer" type="footer"></block>
<block name="wrap-banner" type="modules" no-main="1" no-wrap="1" style="raw">wrap-banner</block>
<block name="top-banner" type="modules" style="raw">top-banner</block>
<block name="left-banner" type="modules" no-main="1" style="raw">left-banner</block>
<block name="right-banner" type="modules" no-main="1" style="raw">right-banner</block>
</blocks>
</layout>