I upgraded the kernel to 2.4.20 / 2.4.22 (both from binary and compiled) and the driver for linksys pcmcia card, orinoco_cs driver gives the error, IRQ in use. I tryed in /pcmcia/config.opts to set reseve the IRQ 3 but this didn't change anything. The 2.4.18 kernel worked fine. Any ideeas ? Thank you, Florentin.