Using wireless card ups CPU usage to 78%

[m333333333]

Hi All. I am a new Thinkpad owner (Z60T). Recently I noticed that my laptop gets really slow at certain times. I found that if I turn off my wireless card (11a/b/g Wireless LAN Mini PCI Express Adapter - I think Intel?), the CPU usage drops back to less than 2%. This is with no programs opened except for the usual background ones. Does anyone else have this problem? Will uninstalling Access Connection help? I notice that is does use a lot of memory... Thanks in advance for your help.