I think there is a locking-bug in your hot-build.
When you are dragging the map and drag the map again before the tiles are loaded completely the map freezes and is hanging in the tilematrix on line 197
i think this is in coherence with:
"GMap.NET.Core: optimized FastReaderWriterLock again ;}, when using Vista or later uses native Slim Reader/Writer (SRW) Lock"
version 188.8.131.52 works normal :)
Ps: Reproduces OS:
- WinXP 32 & 64
- Win7 32 & 64
Greetz from Austria,