I went through several of KCotreau's answers yesterday upvoting, showing my appreciation using the upvotes I had left near the end of the day.
This morning, I found none of my votes for him from yesterday have apparently been recorded.
Please check this out and provide an explanation.
You triggered the filter that prevents too many upvotes from user X to user Y in a certain time period.
@DanielBeck and I had this problem before, but it seems his votes got through after all – there was a misunderstanding involving reputation recalc.
The details of this filter aren't known, and obviously won't be undisclosed, however the general rule is: If you spend x votes on user X, you should probably spend the same amount on other users too.
Apart from that, there's nothing to be done about it.
