On multiple sources in internet i see that SignalR 0.5.3 is released, i even find the screenshot of NuGet Manager which has v 0.5.3 on it. 
But in my Nuget manages there is only v 0.5.2 and here also latest is 0.5.2.
So, the question is where do i get the latest SignalR?
It seems like 0.5.3 is on the gallery, just hasn’t been tagged as the newest release.
http://nuget.org/packages/SignalR/0.5.3
Try running this in the Package Manager Console:
However, I suspect that 0.5.3 has been pulled because of a problem (?) since the official SignalR web site says 0.5.2 is the latest. It might also be that they are going to rename the NuGet package to
Microsoft.AspNet.SignalR.