Currently using a 700MHz eMac(10.3.9) with a ZD1211 USB dongle. When it works, it works fairly well considering it's running off USB 1.1.

The problem is that 90% of the time the driver just hangs and eats up all the CPU time(seriously, when I opened up Activity Monitor the idle % alternates between zero and negative zero). Usually it takes about half an hour of cajoling and rebooting to get the card working.

Anyone had the same problem and knows how to fix it?