In fact most folk carry semi/illegal charts because they never update them when a circular comes out mid cycle. Its not uncommon for the charts to be out of date the day they get published.
Also true. And I admit to being guilty of this too.
It's another reason to standardize on the Jeppesen series of VFR+GPS charts for Europe. All the updates are in one location from one vendor, who even can send you an update notice every Friday.
General Aviation VFR+GPS Charts - Jeppesen