AVR Freaks

Hello,

I'm testing UART communication, have problem with function usage.

#define F_CPU 1843200UL// Clock Speed
#define BAUD 115200UL
#define MYUBRR ((F_CPU/(16*BAUD))-1)
#include <avr/io.h>
#include <util/delay.h>
#include <stdlib.h>

void USART0_Transmit(unsigned char wejscie)
{
	while ( !( UCSR0A & 0x20) );
	UDR0 = wejscie;
	return;
}
void USART0_Init(unsigned int);
void uart_puts(char * );

int main(void)
{
		/* Set baud rate */
		UBRR0H = (unsigned char)(MYUBRR>>8);
		UBRR0L = (unsigned char)MYUBRR;
		/* Enable receiver and transmitter */
		UCSR0B = 0x18;
		/* Set frame format: 8data, 1stop bit, no parity */
		UCSR0C = 0x06;
//	USART0_Init ( MYUBRR );
    while (1) 
    {
		while ( !( UCSR0A & 0x20) );
		UDR0 = 0x31;
		while ( !( UCSR0A & 0x20) );
		UDR0 = 0x32;
		USART0_Transmit(0x33);
		   	_delay_ms(1000);
    }
}

In console i receive 123, and no delay. If  I comment:

//USART0_Transmit(0x33);

i receive 12 and 1 second delay. I noticed similar problems yesterday with external interrupt - they didnt returned to last point.