Yeah that's quite normal because when you first publish Hubpages will publish a newly published link all over its site to give you a good run and help get the word out there.
That is why is is suicide to published a half baked or half finished hubpage, simply because you get only one shot at this.
I'm no pro here but this is just my belief, that its crucial to published high quality hubs that are informative, entertaining and offer superior value.
Because the potential viral effect of your hub is never more promising than at the first 24-48 hours after you publish.
In my opinion you should aim for the bullseye each and every time.
And this is coming from some body with his fair share of hubpage flops.
Also its good to think outside the sandbox (hubpages) in terms of traffic and SEO and the niche you choose and if your hubpage keywords have a reasonable chance for ranking in Google.
Also I feel you really have to build hubs on very narrow specialized laser focused niches, and have many of them with slightly different keyword focuses and organize them in interlinked clusters.