See: "http://linuxtoday.com/news_story.php3?ltsn=2002-05-15-015-26-OP-HE-SV"
"Here's something you don't see every day. Two reputable and veteran IT research outfits --- Giga and META --- taking diametrically opposite positions on an issue. The META Group has released a stinging report that essentially says there is no future for Linux on the mainframe. Meanwhile, Giga says there is. "If META is right, a whole bunch of people at IBM and mainframe Linux distributors SuSE, TurboLinux, and Red Hat should get ready to post their resumes on Monster.com. "The META report says that mainframe configurations of Linux will fall out of favor as soon as 2005, by which time Unix and Intel-based Windows and Linux solutions will have enough mainframe-like features without the mainframe-like costs to make those options the better choice. In a scathing review of Linux's ability to support mission-critical applications, the report cautions that 'current Linux incarnations are relatively immature, as evidenced by the interminable list of errors/patches on Linux providers' Web sites. They have, therefore, been naturally limited to simple, less-critical applications such as LL Bean's e-mail notification system...'"
