First off, apologies if this is posted in the wrong section. I'm running 1.23 on a WRT54gl with a WPA password that is a combination of letters and numbers. Back in February i noticed the activity light on the router was blinking like mad even though my pc wasn't turned on. I went to my ISP's site and checked my internet usage and discovered that for the previous 7 days, there was an accumulated 30gigs of usage that wasn't mine. It was quite obvious that someone else was using my wireless since my typical uploads are just a few hundred megs per day at most but now were a couple of gigs.... just in uploads alone. I changed the password and immediately the light stopped blinking. the next day i checked my usage again and that definitely solved the problem. Except that about a month later it happened again. This time i caught it earlier so they only stole about 7 gigs. But that still put me over my monthly usage limit so again i was billed extra. Changing the password again solved the problem. Except that it happened yet again....for the 3rd time, only a few days later. My ISP won't/can't do anything about it and they made it clear that i will be paying for all of the usage. I'm mystified as to how this is happening and I don't know what to do. Changing my password every day is going to be a huge pain. Would going back to the Linksys firmware help? Is there another solution? I'd appreciate any suggestions. Thanks.