I had 4 teleport timeouts and disconnects in a row earlier today, around 10pm SLT. I was trying to go to my new houseboat premium parcel, from my private island home. At the time I was using Singularity Build 7503. I waited for the forced disconnect each time. Finally I gave up and took a break. Twenty mins later I relogged back in on Firestorm 6.0.2, and TPed there normally. Tried to go back and forth and no failures. But the same Singularity Build usually TPs fine. It seems to be more of a network path timing issue, between the various servers.
I been TPing around more on this account than my main one lately, so I see more failures with this one. The problem is certainly not fixed, just erratic. Next time I get a singularity fail, I will try another avatar on both Singularity and Firestorm right away, going from my same home region to my Premium home, just to be consistent, and see what fails then.
Once I have a failure to the same destination, it persists, until I change viewers or take a break - suggesting it is path and time related to me. But NOT necessarily during busy times.
I never recall having a failure TPing around different parcels on the same region, or connected nearby regions, btw. But I have had many failures from my mainland shop parcel to the Premium continent. My mainland region parcel ( a skybox shop) is nearly deserted. I am the only one there in the middle of nowhere, and Spare times run around 19 ms out of 22ms.