Can you check the cron entry in Cpanel and see if its still there?

And I keep getting the error reports. Once per hour. Did you deny access to the GET command?

I keep getting the error reports.
Are you sure it has to to something with the address update?

The error messages cron keeps sending to me are:
"/bin/sh: GET: command not found"

I would expect something like "site not found" if it was the domain name problem.

addon domain
my main domain is sanktrum.uni.cc

The last error message came 23 minutes ago (according to GMail)

Well, I know Unix very little, so I just copy-pasted the cron line from the Drupal.org recommendations and it worked well for several months until couple of days ago.
I tried changing the crontab entry to "wget http://www.googlersblogs.com/cron.php > /dev/null". It worked ok, cron executed successfully, but it is still not identical to my old good GET command.

GET emailed me only if some error happened during the execution and wget emails me always that is a bit too much. If you know how wget works, could you advise some command line arguments to suppress the standard output and to report only standard error output?

Well, it worked for five months at least
The whole http://www.googlersblogs.com is built with the data fetched by the cron.php started by the GET command