yeah the wiggle splash thing, you know...
I'm running 2.7, when the desktop loads up after turning the system on a huge 2.7 red logo appears. It's in 2 parts 1 has a solid image of the 2.7 logo on one layer and on the layer above it has the same image but it wiggles/waves above the still image. it only lasts for 1-2 seconds then disappears. There's a manager for this thing somewhere where you can adjust how long it stays on the screen, whether you want it to wiggle or not, I think you can change the image as well or just shut it off altogether.
I'm not sure how else to explain it, being I'm really not sure what it's called. It is part of the normal install not an extra installed program, I just reinstalled 2.7 due to a theme crashing my entire o/s and there it is. I removed the splash from my last setup a few weeks ago when I stumbled upon the manager for it.