HTB warnings

Hi all,

I use sabishape[1] to shape my traffic that I would normally do,

sabishape -i eth1 -u 40 -d 240 for my 256/64 ADSL line , but recently in dmesg 
I got following warnings:

HTB: quantum of class 10031 is small. Consider r2q change.
HTB: quantum of class 10032 is small. Consider r2q change.
HTB: quantum of class 10033 is small. Consider r2q change.

I thought sabishape might be buggy but wondershaper from LARTC gives the same 
warnings. So I wonder if anyone have any ideas?

[1]  http://sabi.co.uk/Proj/Small/sabishape-2.1.tar.gz


Regards,
ismail