I am having some issues with 8788 ON 1.9.2.3 I have looked in the applied patches and it only lists 7405. So when I have ran 8788 v2 I came across some errors:
app/etc/modules/Mage_All.xml
skin/adminhtml/default/default/boxes.css
patching file skin/adminhtml/default/default/media/flex.swf patching file skin/adminhtml/default/default/media/uploader.swf Reversed (or previously applied) patch detected! Assume -R? [n] Apply anyway? [n] Skipping patch. 1 out of 1 hunk ignored -- saving rejects to file skin/adminhtml/default/default/media/uploader.swf.rej patching file skin/adminhtml/default/default/media/uploaderSingle.swf Reversed (or previously applied) patch detected! Assume -R? [n] Apply anyway? [n] Skipping patch. 1 out of 1 hunk ignored -- saving rejects to file skin/adminhtml/default/default/media/uploaderSingle.swf.rej patching file skin/adminhtml/default/default/xmlconnect/boxes.css Hunk #1 FAILED at 90. 1 out of 1 hunk FAILED -- saving rejects to file skin/adminhtml/default/default/xmlconnect/boxes.css.rej