Every once in awhile there is a pretty loud cracking sound on my phone line. Some days worse than others. I can also hear a soft hum on the line most of the time. When it rains, my dsl speed drops considerably, sometimes losing sync. Does this sound like a line issue or is there something else maybe. I just installed a new whole house dsl filter/splitter running cat5 cable from the nid to filter/splitter. I also used cat5 cable to run to my jack for the modem. Anyone have any ideas?