I have this card, it has latency and hanging problems, but they're all verizon's software...
set up a dial up networking:
name: [email protected]
after I removed the verizon manager and venturi I tested my speed at dsl reports and got:
Your download speed : 828 kbps or 103.5 KB/sec.
Your upload speed : 114 kbps or 14.3 KB/sec.
and my latency is gone.