Skoda fabia making noise when hot

Hi I got a skoda fabia 1.4 16v 2005. I'm a delivery driver after 2 hours of driving around delivering food my car starts to makes a squeaky sound from drivers side. I can't see anything under the car but I touched the near side inner drive shaft and its hot but can keep my hand on it but the off side inner drive shaft is so hot I can't keep my hand on it. I did replace this 2 years ago. The person who put it on for me didn't tourqe the nuts properly they came loose lost some grease I tourqed them up properly myself  can this be the problem because it lost some grease. Thanks