Before you upgraded to vb3.5, when you would use quick reply the default setting to quote the post was checked. vb3.5 by default has it off now. Can you please make the defaute checked again?
Open template
SHOWTHREAD
find:
HTML Code:
<label for="qr_quickreply"><input type="checkbox" name="quickreply" value="1" id="qr_quickreply" accesskey="w" tabindex="4" />$vbphrase[quote_message_in_reply]</label>
replace with:
HTML Code:
<label for="qr_quickreply"><input type="checkbox" name="quickreply" value="1" id="qr_quickreply" accesskey="w" tabindex="4" checked="checked" />$vbphrase[quote_message_in_reply]</label>