Hello again (I am the author of the last post), Installing "linux-backports-modules-2.6.24-16-generic" solved the problem.
The new version of the driver iwl3945 solved it. ~ % sudo modinfo iwl3945 | grep srcversion srcversion: FDE2E62843DE3ED112A50C3 -- Unable to connect to WEP encrypted network when using iwl3945 module (but success when using ipw3945) https://bugs.launchpad.net/bugs/176602 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs