Firstly after having installed it and timing the before and after loading time of forum and topic summaries I did find that it added about 1 second to the topic loading times. Nothing big, but when a summary loads in 1 second, 2 full seconds is twice as slow =).
Anyway, I've found on my beta board (with only me testing) that if you enter a topic and then click back to the topic summary it counts in multiples of two and now 1? Thus 1 visit = 2 and 2 visits to the topic = 4.
Try for yourself: http://www.ispreview.co.uk/ubb/ultimatebb.php?ubb=forum;f=1
Also, doesn't this affect cache since its more dynamic and therfore must update more often? I removed it from the forum summary pages since there was no need, so if you note that then it's not a bug, just my own preference.
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