I am watching for planes to fall from the sky
Actually, the change of daylight saving time will rules probably cause many problems that can never be fully resolved as a result of ambiguities created in data format conversion. Some systems and applications timestamp events and files using local time; others use UCT. Unless a system or application has translation routines that can deal with different time change rules for different years, there will be four weeks worth of data from all years prior to 2007 that will be botched when it's accessed. Worse, if the timestamp gets converted from UCT to local time using one set of rules, and then converted back to UCT using another set (or vice versa) the data will get shifted by an hour with no sign that anything is wrong.
While it's unlikely that anyone will be interested in most access logs that are over a year old, that still doesn't mean it's a good idea to retroactively garble them.