I took three of the computers (one cobra, one gekko, one vyper)diving yesterday in the St. Clair River, 27 ft for 42 min, and all three recorded the dive correctly in the log. I didn't mention in the earlier post that aftre I "erased" the computers that a "strange dive" appeared in each of the computers log. On the Cobra it numbered the dive #27 start time of 10:07AM at 26ft for 19 min and a date of 05/16/54 and using 8% Oxygen. All the other computers have a similar reading with the same dive #27. Has this happened to anybody else that has erased thier logbook using the program.