xsara noise still?

to cdc thanks for advice ,I have checked brakes ,seem fine all cleaned,still cant pinpoint noise ,drive shafts and wheel bearings seem ok ,im at my wits end now ,the noise is just so annoying ,definitely sounds like two pieces r catching then moving past each other, the engine mount seem ok ,I cant get to the bottom one though ,any one out there please n e suggestions this is a real pain,the noise isn't all the time ,but im worried it is something that will completely fail on me