First domain migration DNS question

Hey all

So I'm new to migrating hosted websites, and I'm moving a couple from their current hosts to a Linode. What I'm not sure about is the specifics of using the Linode DNS manager to have the domain point to my Linode instead of the original location.

I configed Apache, tested the server with Lynx by way of resolving the hostanme to my own Linode's IP. So the server works.

I imported the zone, then I changed the A record, and it's been a day or so and I'm not seeing any change. I looked at the imported zone in Linode DNS manager and its SOA record, which points to ns1.linode.com. However, this is not the same as what dig gives me on the public net:

; QUESTION SECTION:

;all. IN A

;; AUTHORITY SECTION:

. 900 IN SOA A.ROOT-SERVERS.NET. NSTLD.VERISIGN-GRS.COM. 2009051900 1800 900 604800 86400

;; Query time: 130 msec

;; SERVER: 192.168.2.1#53(192.168.2.1)

;; WHEN: Tue May 19 11:14:38 2009

;; MSG SIZE rcvd: 96

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 23941

;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:

;xxxxxx.net. IN A

;; ANSWER SECTION:

xxxx.net. 14400 IN A xx.xx.240.202 (old ip)

Can anybody suggest what gigantic step I've overlooked? Thanks much everybody.

-r