September 20, 2010 Patch

Patch notes

Optimizations to multi-core rendering
Removed -heapsize command line argument. Some detail: This command made sense in Half-Life 1's memory manager. The current engine manages memory in a way that doesn't need it specified. Under some circumstances, specifying a non-optimal heapsize causes crashes and/or reduced performance
Fixed an exploit that allowed people to send fake VAC messages to clients