apt update / apt upgrade err...

[bruce]

Hi.

I'm running
 apt update:

and get:
Hit:1 http://mirrors.digitalocean.com/ubuntu noble InRelease
Get:2 http://mirrors.digitalocean.com/ubuntu noble-updates InRelease
[126 kB]
Hit:3 https://repos-droplet.digitalocean.com/apt/droplet-agent main
InRelease
Hit:4 http://mirrors.digitalocean.com/ubuntu noble-backports InRelease
Hit:5 http://security.ubuntu.com/ubuntu noble-security InRelease
Hit:6 https://deb.nodesource.com/node_22.x nodistro InRelease
Fetched 126 kB in 1s (89.8 kB/s)
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.
W: Target Packages (main/binary-amd64/Packages) is configured multiple
times in /etc/apt/sources.list.d/third-party.sources:1 and
/etc/apt/sources.list.d/ubuntu.sources:1
W: Target Packages (main/binary-all/Packages) is configured multiple
times in /etc/apt/sources.list.d/third-party.sources:1 and
/etc/apt/sources.list.d/ubuntu.sources:1
W: Target Translations (main/i18n/Translation-en) is configured
multiple times in /etc/apt/sources.list.d/third-party.sources:1 and
/etc/apt/sources.list.d/ubuntu.sources:1
W: Target DEP-11 (main/dep11/Components-amd64.yml) is configured
multiple times in /etc/apt/sources.list.d/third-party.sources:1 and
/etc/apt/sources.list.d/ubuntu.sources:1
W: Target DEP-11 (main/dep11/Components-all.yml) is configured
multiple times in /etc/apt/sources.list.d/third-party.sources:1 and
/etc/apt/sources.list.d/ubuntu.sources:1
.
.
.

I examine the 2 files but don't see any kind of "duplications.."

Researching over the 'net hasn't caused any aha moments yet...

Any thoughts/pointers/comments??

thanks