It had always puzzled me as to why some users reported issues while others had no problem.
While creating installers to help users reinstall AHP I noticed not all my PCs had the same version of X10nets
They all had AHP 3.318 installed.
http://tuicemen.com/forum/index.php?topic=779.msg4390#msg4390
The DST problem (that AHP didn't use the "new" DST dates, and still switched on the old ones) was an issue that was reported prior to the 2008-2010 "development vacation). In the "official" bug list here on the forums, I list that as being fixed in v3.264, released on 3/23/2010. However, I was later told by the developers that it was actually fixed in v3.236, the last version released by the previous coding team, back on 9/5/2008.
So, anyone running 3.236 or later *shouldn't* have issues with DST anymore.
However, I also know that there were certain AHP released that broke the SDK, and that users had to upgrade to a newer version of the SDK if they upgraded AHP. That fits with a major change to the x10nets.dll.
If there really is a full install for 3.318, that doesn't require registration, that is a good thing - as 3.318 was the very last version of AHP released by the old X10. Upgrading will still bring all those bugs that came with that version, though.