The last few times I have swam the watch fails to register distance/lengths at all on the screen, after which I finish the activity and the correct info is displayed on the summary (so it has been counting fine). It keeps doing this unless I reboot the watch then the problem is solved. I guess the remedy is to reboot before I get in the pool but it is a re occurring bug which could do with being resolved. Anyone else have this problem (happening on the last two software updates)