We have a entry door system that is controlled and monitor via an old computer. Because of inherent faults we decided to replace this computer with a new model. Dell, straight out of the box. Yesterday the engineer came armed with the entry system software disk to install on it.
After a fair amount of time and intermitant complaints about a slow install he finished. I logged on to test it and it was so slow as to be virtually unusable. I complained and the engineer proceeded to blame the hardware and our network and said there was nothing he could do.
I point blank refused to sign him off (he had already phoned his next job to say he was on his way) told him that his software install was at fault and that he had to sort it out.
After a number of calls to Microsoft he downloaded some patches and did a reinstall. It worked perfectly. Turns out that the version he was installing was very old (being the same as originally installed in 2000) and that it wouldn't work properly with XP. I also discovered he knew this before he started!