If you're using the zoneedit.com nameservers, you will need to change those at your domain registrar (GoDaddy, Network Solutions, etc).
Currently it shows your nameservers to be:
Code:
;; AUTHORITY SECTION:
thoughthole.com. 119866 IN NS ns1.rimuhosting.com.
thoughthole.com. 119866 IN NS ns2.rimuhosting.com.
;; ADDITIONAL SECTION:
ns1.rimuhosting.com. 35369 IN A 66.199.228.130
ns2.rimuhosting.com. 21882 IN A 206.123.113.132
... which is wrong from the context you provided as I am assuming you are moving from rimuhosting into linode correct?
Anyway, I think that if that goes well, then your other problems might go away. If not then one step at a time. Get that sorted out first.