AVR Freaks

hello ..

I know This is repeated ...

I'm using ATmega8 , The problem is that when i set the clock to internal RC 1MHZ (in fuse bits and code) with buad rate set to 2400 (error rate is 0.2% according to datasheet) it works perfectly !

But  when i set the clock to Internal 8MHz (both in fuse bits and code) with baud rate to 9600,4800,2400,19200 (I tried all 4) (error rate is 0.2% according to datasheet) it outputs none sense on Terminal screen

I ofcourse checked that the baud rate is the same in my serial terminal And the code ..

My Code:

#define F_CPU 8000000UL
#include <avr/io.h>
#include <util/delay.h>

//-------------------------------------------------------------------------------------------------

void Usart_Init(unsigned long USART_BAUDRATE)
{
	unsigned int BAUD_PRESCALE;
	BAUD_PRESCALE = (((F_CPU / (USART_BAUDRATE * 16UL))) - 1);

	UCSRB = (1 << RXEN) | (1 << TXEN); // Turn on the transmission and reception circuitry
	UBRRH = (BAUD_PRESCALE >> 8); // Load upper 8-bits of the baud rate value into the high byte of the UBRR register
	UBRRL = BAUD_PRESCALE; // Load lower 8-bits of the baud rate value into the low byte of the UBRR register
};
//-------------------------------------------------------------------------------------------------
void Usart_Write(char Data2Write)
{
	while ((UCSRA & (1 << UDRE)) == 0) {}; // Do nothing until UDR is ready for more data to be written to it
	UDR = Data2Write;
};
//-------------------------------------------------------------------------------------------------
void Usart_Write_Text(char *text_){
	unsigned char c;

	while ((c = *text_++) != 0) {
		Usart_Write(c);
	}
	Usart_Write(0);
}

int main(void)
{	

	DDRB=0xff;
	PORTB=0;

	Usart_Init(9600);

	Usart_Write_Text("Hello");
	Usart_Write(0x0d);        // new line
	Usart_Write_Text("-------------");
	Usart_Write(0x0d);

	for(char i =0 ; i<10 ; i++) // quick led flash Just to check that the atmega has started up
	{
		PORTB=255;
		_delay_ms(50);
		PORTB=0;
		_delay_ms(50);
	} 

    Usart_Write_Text("StartingUp... \r");
    while (1)
    {
		Usart_Write_Text("still alive : )\r");
		PORTB=255;
		_delay_ms(500);
		PORTB=0;
		_delay_ms(500);

    }
}

Edit: ((Spelling))