If it is specific ntp servers that cause the issue: don't worry, every time server gives the same time, so you might as well use the standard Dlink ones. I honestly can not think of one reason the use another specific ntp server. Who would like to try? 
But if it worked before...why not now? Thank God this kind of change didn't affect the manual input on the dynamic DNS updating page where
OpenDNS still isn't represented in the drop-down and the information must be input manually.
I'm getting the feeling that this ''tinkering'' toward a new release is simply not a priority. Things that worked are being broken while broken things are fixed. I know this is a beta but this whole process is beginning to seem fall under the ''half-arsed'' category.
With brand new devices from D-Link showing up on the market, it seems to me that's where the bulk of customer care and technical support is going to go now. So it looks like the wait just got longer for the loyal D-Link DIR-655 crowd.
This D-Link firmware update for the 655 seems to be the new MobileMe fiasco. The good news-bad news is that months (is that optimistic?) down the line when everything is finally working properly, many will have bailed for something reliable. You certainly won't get any new love from Mac users over the USB thing either.
I'm as of this post sending a note off to both
Tekzilla and
GeekBrief noting a general disappointment with their ''rave'' reviews of the DIR-655 as a great alternative to the overpriced Apple Airport line of networking products. I'm sure there is another non-Apple and non-D-Link device out there that one of them will find to rave about.