Yahoo Site Explorer has shown different counts for registered and non-registered users.

Earlier, seoroundtable.com divulged Yahoo reported its site to have 14,999 pages indexed in Yahoo and a total of 57,146 inlinks to the homepage from all pages. But using a registered account, Yahoo reports seroundtable.com to have 15,556 pages and a total of 216,880 inlinks to the homepage from all pages.

Obviously, there's a huge discrepancy between 57,146 and 216,880 inlinks. To respond to the grievance, Yahoo said:

Recently, some of you noticed changes in counts for Site Explorer results, where the counts were different for logged-in users versus logged-out users.

While the counts have been incorrect in some cases, the actual returned results have been correct. However, we did roll out a product fix yesterday and will be rolling out a couple more over the next few days to resolve this difference in counts some of you have observed.

Please disregard any counts for inlinks reported by Site Explorer from October 11 through next week.

I hope Yahoo can patch things up as soon as possible. The discrepancy isn't an undersized issue to be ignored.