I am seeing the same issues on Ubuntu 11.04
Linux flinux 3.0.0-14-generic #23-Ubuntu SMP Mon Nov 21 20:34:47 UTC 2011 i686 i686 i386 GNU/Linux
and Ubuntu 10.10
Linux kmsys 2.6.38-12-generic #51-Ubuntu SMP Wed Sep 28 14:27:32 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
with a Chinese CSR knock off, that does work properly under Windows.
I am seeing the same issues on Ubuntu 11.04
Linux flinux 3.0.0-14-generic #23-Ubuntu SMP Mon Nov 21 20:34:47 UTC 2011 i686 i686 i386 GNU/Linux
and Ubuntu 10.10
Linux kmsys 2.6.38-12-generic #51-Ubuntu SMP Wed Sep 28 14:27:32 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
with a Chinese CSR knock off, that does work properly under Windows.