Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Causes high CPU utilization

According to SysInternal's Process Explorer, both HWI (hardware interrupts) and DPC (deferred procedure calls) tend to run to 3%-40% each while this card is installed; both drop to under 1% once it's removed. Both remain under 1% while using another manufacturer's (USB-based) 802.11/b WiFi adapter. I'm given to understand that such high HWI and DPC rates often indicate buggy drivers, but I've found no useful driver update info on D-Link's web site, last I looked. That other /b adapter, BTW, gives better throughput than this /b/g card of D-Link's.