Theory of conspiracy, secret codes in .NET exceptions

Ever noticed those weird values in .Net exceptions that get into RaiseException native call?
There's 0xE0434352 for CLR4 and 0xE0434F4D for CLR2.

.formats 0xE0434F4D
Evaluate expression:
Chars:   .COM

.formats 0xE0434352
Evaluate expression:
Chars:   .CCR

.COM? They really have a sense of humor.