GoldMine 6.70.61214 brought Internet Explorer 7.0 compatibility to GoldMine. It also brought a nasty bug. If you complete an unscheduled activity, e.g. select Complete | Unscheduled Call or Complete | Pending Activity from the main menu you’ll find that the activity will often simply ‘disappear’.
Not Good.
Thework-around is to schedule a ‘dummy’ activity for every contact record. A contact with an activity pending will not be subject to the above problem. We can do this by scheduling any sort of an activity to the entire database.

I’ve scheduled an activity to the ‘Master’ user to overcome the bug for clients. After an update to GoldMine 6.70.61214 is released, we can use the Auto-Update feature in the Activity List to delete all ‘dummy’ activities.
Rolling back to GoldMine 6.70.50123 is also an option, however, since the new build of GoldMine, probably, 6.70.70226, will be released soon that will fix the problem, this is probably a good work-around at this time unless you're seeing additional problems.
PS - Since most of you are probably not using this release of GoldMine this is a non-notify post.