I'm suddenly seeing a bunch of stations popping up on the left hand side call sign list. Hundreds are coming in on regular intervals at something like 10 or 30 minutes. Examples are XE2BNC-10, YN1BBS-10, KE6WX, WD9U-10, etc. They all have "WinAPRS. etc (L2K)" present on the status when you click on them. They also state Public Winlink Gateway.
I thought I had caused this by clicking on something somewhere, somewhen without realizing it. So I downloaded and setup APRIS32 in a new folder. And it's still happening.