Two thirds of Macworld Online readers rush to install the latest Mac OS X upgrades – despite a history of serious bugs.

A total of 62 per cent of 1,127 poll respondees install updates without a second thought. "I always download straight away with baited breath, to see what’s new and improved," said one reader.

Another brave soul said: "I work on the theory that I've got a standard G4 iMac with no additional doobries inside to muck things up, and for Apple not to have catered for."

The findings fly in the face of Apple’s recent record with OS X upgrades. Its OS X 10.2.8 upgrade was withdrawn a day after its launch in order to "resolve an issue affecting Ethernet networking on a small number of Power Mac G4 desktop systems", wrote Apple.

A few months earlier the OS X 10.2.4 update was found to severely impair the performance of batteries in some iBooks and PowerBooks.

One reader admits that even the 10.2.4 experience didn't make him more cautious: "After the 10.2.4 incident, where I successfully reduced the battery life of my iBook to 5 minutes, you’d think I’d have learned. But no, I still go ahead and download."

Wait and see Only 29 per cent employ a wait-and-see attitude, preferring to let others discover what nasties the updates might have in store.

"I simply cannot afford for updates to screw the computers up, so usually wait three to four weeks before installing upgrades," wrote one respondee.

Another 9 per cent admit to being so scared of updating to Mac OS X that they are still using OS 9.

One reader states that unlike Microsoft, Apple has no excuse to allow bugs through: "Microsoft can almost be excused for releasing buggy patches because it has to cater for an infinite number of hardware combinations. However, Apple has a finite mix of hardware variations, and therefore the number of people experiencing problems should be almost non-existent."

Another reader takes the conspiracy-theory perspective: "Perhaps by releasing a really crappy update, Apple is hoping to encourage a lot of people to shell out the £99.99 for 10.3.0 when it comes out, as this will fix their problems."

Take part in this week's reader poll, where we try to ascertain which PowerBook Macworld Online readers prefer. Readers can also let us know how many inches they would like at the Macworld Forum.