It may be happening somewhere out there beyond its orbit, but Apple Computer Inc is by no means immune to the gaderene price-slashing in the MS-DOS personal computer market, and insurance giant Aetna Life & Casualty Inc, America’s 15th biggest company, with 5,000 Macintoshes in, has struck the machine off its preferred list on the grounds that it is still too difficult to integrate Macs with machines running Windows, Computer Reseller News reports, the final straw being plunging prices from the likes of Compaq Computer Corp; Aetna separately said that it would cut almost 5,000 jobs by the end of 1993 are those all the people that can’t face the idea of having to switch over from Mac to Windows?