I'am sorry if my explanation is completely illogical...but this is what I figured out ........pls inform me if my notion is completely wrong..... In a system like Windoze ---->DLL--->EXE (RAM)---->Compiled but no check for size of compiled output. In GNU/Linux OS ---->object/.so----->binary/daemon(RAM)---->Compiled and checked for size of compiled o/p. And as for shell scripts, and rpm's which we blindly execute sometimes........pls do a md5 verification to check for trusted signatures........ So it's 98% safe to open mails on a linux system than any other system........these days a lots of executable stuff on the prowl..... bothered abt bugs in the system......well the community is so alert that you'll definitely know abt it before the hacker knows it......... hope this leads us somewhere, bijucyborg getting knighthood for >>Services to global enterprise<<< __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free web site building tool. Try it! http://webhosting.yahoo.com/ps/sb/