Spent too much time last night playing with the Netscape bug; among other things wrote some code to throw various random binary URLs at Netscape. Netscape seems prepared to swallow the bait as long as the URL does _not_ contain characters screened as follows: if ((c != '"') && (c!='>') && (c!=0) && (c!='/') ) { This means you can't plant 0x00, 0x22, 0x3e or 0x2f. Anything else can be made to show up in various registers after things go blooey. I've only made it segfault in different places so far, still working on getting it to do something it wouldn't ordinarily do and not crash before it does it. [Working under Solaris 2.4; I may try my luck on Macs, since this bug crashes the whole OS... need to load up debug tools first though.] Hope this helps others... Doug