Stack overflow in unmanaged: IP: 0x5fad4c, fault addr: 0x7f7fc7a89b28

From cityindex/csharp-bot-development-flow#8

Running an app under mono 3.0.10 on Ubuntu 12.04 using Tracker functionality from  AppMetrics.Client.dll fails with the following

```
2013-06-26T17:26:27+0000 app.0: Stack overflow in unmanaged: IP: 0x5fad4c, fault addr: 0x7f7fc7a89cc8
2013-06-26T17:26:37+0000 app.0: Stacktrace:
2013-06-26T17:26:37+0000 app.0:
2013-06-26T17:26:37+0000 app.0:
2013-06-26T17:26:37+0000 app.0: Native stacktrace:
2013-06-26T17:26:37+0000 app.0:
2013-06-26T17:26:37+0000 app.0: Stack overflow in unmanaged: IP: 0x5fad4c, fault addr: 0x7f7fc7a89c78
2013-06-26T17:26:37+0000 app.0:         /app/app/runtimes/mono/bin/mono() [0x4a27fd]
2013-06-26T17:26:37+0000 app.0:         /app/app/runtimes/mono/bin/mono() [0x4f718f]
2013-06-26T17:26:37+0000 app.0:         /app/app/runtimes/mono/bin/mono() [0x41ce87]
2013-06-26T17:26:37+0000 app.0:         /lib/x86_64-linux-gnu/libpthread.so.0(+0xfcb0) [0x7f7fcf302cb0]
2013-06-26T17:26:37+0000 app.0:         [0x7f7fc7a7fce0]
2013-06-26T17:26:37+0000 app.0:
2013-06-26T17:26:37+0000 app.0: Debug info from gdb:
```

I'll attach a test case showing which functionality causes the issue shortly.