whe i run "rankquest" html validator it's telling me i have this error:

You may need to move one or both of the <form> and </form> tags. HTML elements should be properly nested and form elements are no exception. For instance you should not place the <form> in one table cell and the </form> in another. If the <form> is placed before a table, the </form> cannot be placed inside the table! Note that one form can't be nested inside another!

now i'm assuming as i've got no other forms on the table, theres a problem between the opening form:

<form name="Form" method="post" action="/Default.aspx" id="Form" enctype="multipart/form-data" style="height: 100%;">
<input name="__EVENTTARGET" id="__EVENTTARGET" value="" type="hidden">
<input name="__EVENTARGUMENT" id="__EVENTARGUMENT" value="" type="hidden">


and the closing point.

<input name="ScrollTop" id="ScrollTop" type="hidden">
<input name="__dnnVariable" id="__dnnVariable" type="hidden">
<input name="__VIEWSTATEENCRYPTED" id="__VIEWSTATEENCRYPTED" value="" type="hidden">
<input name="__VIEWSTATE" id="__VIEWSTATE" value="xxxxxxxxxxxxxx" type="hidden">
</form>

which are the starting and ending tags of the dotnetnuke default.aspx page.

i'm worried that this error may affect google ranking when it happens (or could be a reason it hasnt ranked quicker), can anyone help me, or shed some light on how to fix this error?

Thanks

Colin