Sales of Palm Inc's closely watched Pre mobile phone are running on track with -- and exceeding some -- Wall Street expectations after just over one week in stores.

But analysts said it may be too soon to tell if the initial excitement will be dampened by new smartphones debuting from Palm's much bigger rivals: Apple Inc's iPhone 3GS starts selling on Friday and Research in Motion's BlackBerry Tour is expected in coming months.

While Palm has yet to comment on the pace of demand, most analysts, citing their own data, said the company shipped some 50,000 units for the weekend of the Pre's debut on June 6. Another 50,0000 units followed soon after.

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