There are a couple of issues I have found with this latest release (2.2). First, the initial location from which to search when powering up the app no longer is accurate. In the previous version, it was dead-on accurate and tapping the overhead view produced accurate close-proximity caches. It now requires me to wait until the location updates with a more accurate bead or I manually reset the search coordinates. This is a real usability drag.
Second, I noticed this today when I logged two finds from the field. Upon my return home I went to Search with Google Maps on the Hide or seek a geocache page and noticed the two recent finds showed as regular cache icons instead of smileys. My Pocket Query, however shows the two caches as "found" but some tag isn't getting set properly until I edit the log from my PC browser. Immediately after resubmitting the log the smiley icon correctly shows for the two caches. How's that for an edge case?
The WP7 I'm using is the Samsung Focus.