My sitemap status is "Pending" since then. Google accessed my sitemaps in an hour time after resubmitting them before. But now things seem to have been changed... Is this a common problem?
This is happening to all of us. I think Google is in the middle of a major update or PR update. I have 35 active sites and all have had this problem.
I think you are right. Earlier on, google was downloading my sitemaps everyday but it takes 2-3 days.