hi guys, i have network with more than one switch first switch connect 14 PC's , ADSL router and 2nd awitch 2nd one connect 13 PC's , 1st switch and 3rd one 3rd one connect 4 PC's and the 2nd one my prob. is with the third one you must know that it's distance is 140 M away from 2nd one, the 4th cable is not work (ground) , it was work well until 2 weeks ago it is not connect it's PC's and not sharing ADSL line. when i use cable tester all lines is OK. the magic part in that story that the 3rd switch is not connected all time its was disconnected all night ONLY????? HELP !!