YEP. THAT'S WHAT IT SOUNDS LIKE.
CAN YOU STILL CONNECT TO HIM? IS IT JUST WEP PROTECTED NOW? OR YOU THINK HE BLOCKED YOUR MAC ADDRESS? IF HE BLOCKED YOUR MAC ADDRESS... YOU CAN ACTUALLY CHANGE THAT ON SOME CARDS
IF ITS JUST WEP PROTECTED, YOU'RE KINDA SCREWED UNLESS YOU WANT TO GO THROUGH THE TROUBLE OF HACKING INTO IT, WHICH REALLY ISN'T TOO DIFFICULT, BUT YOU WILL NEED A LINUX BOX, A PRISM2 OR PATCHED ORINOCO BASED WIRELESS LAN CARD, A FEW MEGS OF HD SPACE AND 1-3 WEEKS OF TIME!!! (GOOGLE FOR AIRSNORT IF YOU'RE INTERESTED)
IF ITS USING A 256-BIT WEP KEY THEN UMM, MIGHT BE A LITTLE MORE DIFFICULT, BUT I'M SURE THERE ARE TOOLS FOR THAT OUT THERE I JUST DON'T KNOW ABOUT YET.
WORST COMES TO WORST, FIND SOMEONE ELSE TO STEAL INTERNET FROM!!!!!!! IF YOU'RE HAVING TROUBLE FINDING AN OPEN UNPROTECTED NETWORK USING THE STANDARD WINDOWS INTERFACE, GOOGLE FOR A PROGRAM CALLED NETSTUMBLER, THAT'LL HELP YOU DO THE SAME THING!!!