SpamCop reeeeeeeeally slow?

I've been reporting all my spam, and generally, I get all the emails 
back from Spamcop almost immediately. But over the last couple of days, 
this has been slowing down to the point where I get nothing for quite a 
while after reporting.

For instance, last night before I went to bed, I reported all my current 
spam.  There wasn't a whole lot, but when I got up and checked email 
this morning, the replies from Spamcop came in over a 6-hour period, one 
or two at a time.

Is something jamming up the system?