[barrkel]

The problems I've had with VPNs are probably down to misconfiguration, but the primary one was limited bandwidth over the VPN, not limited bandwidth to the internet. Living in Europe, but connecting to a VPN server in California, reduced a 4Mbit connection to something closer to 64kbit - I hypothesized that whatever corresponds to the TCP window on the VPN was configured with too low a size, and the latency was killing stream throughput.

[joshwa]

Same problem, same numbers. (China -> Atlanta). Is your VPN Juniper IVE by any chance?

[barrkel]

The only non-generic client is Nortel, I'm not sure what's at the other end (but I'd guess Nortel).