Hi,
I allowed "show seconds" in Digit clock settings in the bottom panel and noticed the seconds glitches... not steady, might say 03 seconds now and it holds, the next you see is 05.
So I also installed Netspeed widget and also added it to my panel, setting it to reload every 1s. Now it also glitches same with the time.

Any fix?

Jumpy clock - Bug 359661 - Digital clock is not updated consistently : https://bugs.kde.org/show_bug.cgi?id=359661