Thanks for the reply Nan, seems the prob was indeed with my hosting company, the error seems to have been resolved this morning without any mods on my part.
Hey Guys, Hope someone can help, fairly inexperienced using cms but I have had website up for a while without any problems until today... getting a weird one and I dont know whats caused it cos I've not worked on the site for about a week and the following errors are now appearing when I try log in ...