Anyway, I don't see the waiting period for suggestions as a problem for the directory myself. Thanks to all visitors for suggesting so many sites, but neither is that the only source of links the ODP has, nor is the goal of the ODP to process all suggestions that are made in a specific timeframe. Has never been the goal. Will never be the goal. Should not be the goal of a good user-oriented (remember: user not equal submitter!) directory.
But talking about numbers, maybe the following is interesting to the readers. As things are, I am more familiar with stats for the german sections of directories than for the english ones. I happen to have some numbers at hand, which could be used as an example. These numbers are some months old, about one month between them.
dmoz (german part): 377730 -> 381655
web.de: 380424 -> 380028 (They stopped giving out numbers meanwhile, can you imagine why? ;-) )
de.yahoo.com: 492872 -> 492998 (They count every category at least twice that is crosslinked, so the absolute number is nonsense. But look at the growth rate, incredible, huh?).