Recently migrated to 13" MacBook Pro. Running NUTD 4.5.3 (i found version 5 to be very buggy and decided to wait for Nighthawk, still waiting.........months, years.....). Anyway, NUTD crashes with great frequency now. Is that a problem NUTD has with OS 10.5.7? Perhaps 4.5.3 is just too outdated. Anyone else using this combo?

To the best of my knowledge, no version of NUDC prior to 5.3.2 is officially Leopard-compatible. The 4.x versions of NUDC almost certainly will have problems, though perhaps someone else here will be able to offer some suggestions. I run 5.3.2 on my PowerMac G5 with 10.5.7 and have had no particular problems (though I don't put NUDC hard by any means), so if you haven't tried 5.3.2, you might give that a whirl.

Regards.

I had NUTD 5.3 working fine on my 13" MacBook with MacOS 10.5.7.

Well, you won't have to wait much longer for NightHawk. Final Candidate release 1 is out now. You might want to take a look at it as a preview of what's to come.

I write back to whom it may concern since this person I am sure is no longer seeking this answer. I have been using and continue to use NUDC 4.5.3; I have steadily upgraded computers and systems and am using 10.5.7 on an brand new intel macbook pro. Was using g3 ibook with 10.5.7. NO problems at all and I have a very large data base of many many years of repeating to dos like 5000. I dont use the menu things because they dont work unless the program is running. I used to love the menu programs under system 7 which were much more powerful then. I own the NUDC 5 but it is not as elegant so I dont use it. I should receive the snow leopard upgrade in the mail soon but will probably not install it because it will likely break my spellcatcher and my you menus and also breaks the Now X menu things. Dang Apple and their psychotic desire to control the menu bar!

Avoid Snow Leopard until they get the bugs out!
Ok, just had to get that out.
I'm running Now 5 on my MacBook Pro and upgraded just to Leopard - no problems.
MY problem is syncing the Contacts with Palm. Palm did an automatic hard re-set (thank you very much) and upon re-syncing, chose an older file and now I can't access the latest contact files i have. Huh? The contacts show on my desktop but will NOT go into my handheld.
Any Palm users out there? I just spent 45 %*&(& minutes with their online chat help and they told me to come here.