I've been there more than once. Now the Suunto is in gauge mode. Really if your computer gives you 20 minutes less NDL than the people you are diving with and they get out of the water just fine routinely the model validation is suspect. RGBM seems not to like a lot of dives that the experience suggest are just fine. How RGBM deals with repetitive dives is one of the issues. Another issue is how they deal with cold water. Apparently Suunto has not heard of dry suits.
My Vytec DS must be defective then... it runs fairly parallel to my buddy's Oceanic and tables I cut myself in V-planner.