I found the fixed width problem here:
http://www.vbulletin.com/forum/showthread.php?t=156775
Admin CP -> Styles & Templates -> Style Manager -> ? ? -> spacer_open
Replace the red code:
Code:
<!-- open content container -->
<if condition="$show['old_explorer']">
<table cellpadding="0" cellspacing="0" border="0" width="$stylevar[outertablewidth]" align="center"><tr><td class="page" style="padding:0px $stylevar[spacersize]px 0px $stylevar[spacersize]px">
<else />
<div align="center">
<div class="page" style="width:$stylevar[outerdivwidth]; text-align:$stylevar[left]">
<div style="padding:0px $stylevar[spacersize]px 0px $stylevar[spacersize]px">
</if>
...with the blue code:
Code:
<!-- open content container -->
<if condition="$show['old_explorer']">
<table cellpadding="0" cellspacing="0" border="0" width="100%" align="center"><tr><td class="page" style="padding:0px $stylevar[spacersize]px 0px $stylevar[spacersize]px">
<else />
<div align="center">
<div class="page" style="width:100%; text-align:$stylevar[left]">
<div style="padding:0px $stylevar[spacersize]px 0px $stylevar[spacersize]px">
</if>
I think this should be added as template change for the iinstall instructions.