I am having the problem that when my site uses www.example.net it works fine but when only example.net it is still pointing to the old host. Does anyone know how to fix this issue?

update: it looks like it is working now. But what I am wondering is was it just a delay with dns servers updating?

All DNS records are cached at your nearest resolving name server. You can control the duration for which they are cached at each individual name server by adjusting the TTL value with the associated record.

Note that a bare minimum recommended value is 300 (seconds). I use one day for all of my records.