> You checked your hardware and it's OK? No, I have not checked. In the case of first machine I'm nearly 100% certain that this is not the fault of the hardware. I'm not so sure about the second machine - it's an old computer and it has experienced minor hardware problems. Not sure what exactly I should check and how should I do it. I was thinking about running hard-disk checks - if anyone can recommend good program for doing that it would be great. Still, are there any KDE logs that could be helpful in searching for the cause? Janek --- Politechnika Łódzka Lodz University of Technology Treść tej wiadomości zawiera informacje przeznaczone tylko dla adresata. Jeżeli nie jesteście Państwo jej adresatem, bądź otrzymaliście ją przez pomyłkę prosimy o powiadomienie o tym nadawcy oraz trwałe jej usunięcie. This email contains information intended solely for the use of the individual to whom it is addressed. If you are not the intended recipient or if you have received this message in error, please notify the sender and delete it from your system.