XP change corrupts data, hamstrings SP3 rollout

Microsoft Corp. confirmed on Wednesday that it delayed the rollout of Windows XP Service Pack 3 (SP3) because changes to the operating system can corrupt data in the company's retail point-of-sale and store management software.
The company has also suspended , automatic distribution of Windows Vista Service Pack 1 andXP SP3 are on hold while Microsoft fixes a glitch in both service packs that can corrupt data in the company's retail point-of-sale and store management software. "Yes, we are temporarily holding any additional automatic distribution of Windows Vista SP1," said a spokeswoman for Microsoft.
The company is also working on filters to block machines running Dynamics RMS from being offered either Vista SP1 or XP SP3; it will resume automatic delivery of Vista SP1 and add XP SP3 to Windows Update once those filters are in place.
And also Microsoft Corp. has warned users updating to Windows XP Service Pack 3 (SP3) that they won't be able to downgrade from Internet Explorer 7 to the older IE6 without uninstalling the service pack.

source: http://www.computerworld.com/action/