Guillotine and Peekaboo issues in Admire Gray for Drupal 6.x

This is a Drupal 6.x version.
I love the look of this theme and generally it works well, but in IE6 (inevitably...) the Peekaboo bug is a problem. The centre column of some pages displays submenu links as teasers with links, including thumbnails, and the text and/or thumbnails simply vanish. They come back (sometimes) when the window is resized, the page is scrolled or the text highlighted, but not always, and often vanish again.
In IE7 what looks like the Guillotine bug is slicing some thumbnails horizontally in a centre column block.
Like another correspondent I've solved an IE page-not-found problem by adding the ie-fix.css file from Garland as this is missing from the Admire Gray download. Any comments on this are welcome too! If anyone wants to take a look my site is www.ashonbikes.com