Suunto has elaborated on what the software glitch that caused the recall of the D6 and D9 computers is:

     The software bug may activate when the D9 and D6 automatically recalibrate to keep the correct time, or the user manually updates the seconds in set mode. Suunto approximates that there is 0.6% (a six-tenths of one percent) chance that the software bug may appear during a dive. When the dive time is incorrect, every fourth second is not registered in the dive time and surface interval time, i.e., dive time goes 25% slower than actual time and tissue loadings are recorded at 25% less than actual loadings. As a trained diver you understand that this could affect your decompression requirements and that the length of a dive is one of the key factors in determining those requirements.

     Even though the D9 and D6 will function correctly approximately 99.4% of the time during a dive, Suunto wants to eliminate the very small possibility of recording the dive time incorrectly. Therefore, Suunto is requesting that all D9 and D6 shall be returned for a software update that eliminates this issue. To date, there have been no known injuries related to this issue.

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