Can somebody help me? If i look at the gramar, it seems like the correct translation for "i miss you" is "seni özleyorum", but the turkish people are saying "seni özledim". 

=)=)

I sort of understand what they mean by saying that, because in my native Polish "to miss" is tęsknić and we can say both stęskniłem się za tobą (past) and tęsknię za tobą (present). I think using the past form puts emphasis on the fact that I HAVE already started missing you, I just can´t wait for your return.

Sufler, i want to help you but i dont understand you.... 

I don´t need help, because it´s not me asking the question.

I tried to explain the issue to the asker who is Mariannehanim using knowledge about my own languge, because we say it similar to Turks

its seni  özüluyorum and yes they often say seni özledim they sort of mean the same .dont worry too much about it

I think I know this.

Seni özlüyorum means continuing action. Someone can say this to you when the feeling is not over. I guess you can read it in a message, hear in on the phone. The speaker feels when he doesn’t see you it’s not enough reason for the longing to stop. I don’t think anyone can say Seni özlüyorum face to face (it would be very poetic).

If the speaker uses past tense Seni özledim he wants to say that the feeling is over for now because he sees you or he is in contact with you in another way that satisfies him and puts an end to the feeling of distance for the time being.

It is basically a question of aspect, a point of view, how the speaker wants to describe his feeling.

sufler, I think we could find the same in Polish because you deal with complicated aspect also, am I right? (We could deal with Polish better if you named the morphemes in the sentence, though. Our Polish is too bad.)

Thanks, everybody. But is it incorrect to use seni özledim in the present?

"özledim" is past. But interesting thing is it doesnt have to be over when you use it. If you write someone far away "Seni çok özledim". It means something like I have been missing you.