Is this a bug?

[Zhestkov Victor]

I have a table with varchar column and when I execute SELECT query like that:
SELECT * FROM sometable WHERE somecolumn='abc   '; it returns records which 
contain records with bo 'abc  ' value, and which are only 'abc'.
Thry this SELECT 'abc' = 'abc   '; it returns true. I think it rather strange.
I have mysql installed from Debian 3.0 r0.
MySQL version is 3.23.49