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I have a similar problem under Arch Linux since I upgraded to kernel 2.6.31.

My WLAN chip is:

# lspci -nn | grep "Wireless"
02:03.0 Network controller [0280]: Broadcom Corporation BCM4306...

BTW: The files inside the JLINK.zip archive, provided at http://download.wolfram.com/?key=GM5YM4 are exactly the same files that were installed by the 7.0.1 installer. There is no need to replace...

The replacement of libML32i3.so dropped the idle cpu usage of Mathematica on my machine to ~16% too.

As I don't have any use for the Java integration of Mathematica, I then deactivated the JLink...

How about a bug report at http://support.wolfram.com/submitabug.cgi ?

I tried this today but it didn't seem to work. Maybe somebody else has better luck than me.

I experienced the same problem with 2.6.29 kernels on Arch Linux: Mathematica 7.0.1 was unusable due to the constant cpu load of above 80%, even when doing nothing.

Apparently this problem only...