Newsletter: sending only one...

Ok I'm running a new install (old updated db) and I have newsletters only mod.. I now face this weird error (I guess it is a error) after I press send

Please wait .. sending emails ..

Please do not interrupt this process! [email protected]¬œßkÂ0Çÿ•À@ìC;ƒ†ŠŒcƒ=Á%MÓµl6ul°?w›m´ú+I¼&ßKîühGöòrœï-üÆyozËq³bóY;NĤ4˜¹Êó¼H·YÁçeUn •9Õb’ 4€RC˜ûK›çµ{ì5WY†!ÃT¦úœ#£´fÃ8²åºDˆ="@Àè�¾ºúVCºI_ÍÀÇñg°IäûßæÀ{+aËaSBß…$Bºi‚ Äìùi."¨¹«¤ŠS!?j¢”ay…FˆÄ–€ÂJ³O]ÁšÃ éÌlA¯Væ\¿v SˆAèÅm˜K•&$åpû€ZÙ“PX¨Ñìÿ˜;ã¡ÿ;8]É^þ{¾û6I©^' aסCé»;}%nÁOm.èuc- ƒ¹ŸB¢q¨r;ÕȵÞz�ì Q˜7CQ÷ÒØ$~{ÌWäq=ÍG.X¤pÕ##¤cµÑ«–’©%4Z:,•4¨éÃÉ„æ€0ô¨Š¥%OÝ8m¼eÁƒLÕ;ezýK!Ÿ $ÜNÐÇDéÞ‹úÙ0q25õ¬÷<ʲÈå7OÆÉ##¸6×ÀõºÈxJÓÒaEt.ChCÚ7ÿ���ÿÿ�9}3ŒÐF��

I haven't tested with all subscribtions yet (couple thousand I guess) only with test group.. It displays only the first email image and afterwards its all china.. BUT it seems to send emails to the whole test group which is about 5 emails but it still gets stuck loading forever and now I don't now will the emails ever get delivered or not.. Any ideas how to fix it?

many thanks as always