Removing 'duplicate' LCNs is the best solution. You probably do not need the second ABC LCN (LCN21 in Melbourne), or the second One LCN (LCN 12 in Melbourne), or the duplicate 7 Digital (LCN 71 in Melbourne) or the duplicate 9 Digital (LCN 91 in Melbourne). You could also do without the SD versions of 7, 9 and 10. However, you would not need to delete all of those LCNs. Two or three of them should be sufficient.
Only two steps involved; disable the services under your IceTV account, and delete the services from the Toppy (while watching live TV press white function key, this lists all the LCNs, and you select the one you wish to delete, press the white function key, and select the delete option - unfortunately you have to do each one separately).
The permanent solution is a firmware update. Last time I spoke to Topfield technical support they had referred the problem to the firmware engineers in Korea. When I get a chance I will ask for an update.
Ian
PS While the T-series Beyonwiz are a great machine, they are not a user-friendly as the Toppys. I use my T-2 as a backup rather than primary recorder.