Problem with aspell checking text in greek

[Eftaxiopoulos Dimitrios <eftaxiop@central.ntua.gr>]

I have tried to spell check several Latex files written in greek. I use kile. 
It generally finds the mistakes but it highlights an irrelevant portion of 
text, usually portions from two words, close to the wrong word. It highlights 
at the same line, a few words before the wrong one. The replacements it 
suggests are generally correct, but I cannot use them since other portions of 
text will be replaced. So I do the corrections manually, by looking in the 
area of the highlight, trying to find the misspelled word and correct it by 
moving the cursor there. Not comfortable.

The texts I spellcheck are written in ISO-8859-7 encoding. I use sarge, 
stable, 2.6.8.