@Uwe: as mentioned by Henrique in comment #112, the fix is in version 2.6.33 of the kernel hence why the bug is fix-released in the kernel. However, Ubuntu Lucid runs on version 2.6.32 of the kernel and therefore the fix is not in Lucid. It should make it into Maverick though, as Maverick should run on kernel 2.6.35 IIRC.
@Uwe: as mentioned by Henrique in comment #112, the fix is in version 2.6.33 of the kernel hence why the bug is fix-released in the kernel. However, Ubuntu Lucid runs on version 2.6.32 of the kernel and therefore the fix is not in Lucid. It should make it into Maverick though, as Maverick should run on kernel 2.6.35 IIRC.