A Palm Pre user is suing Palm and Sprint Nextel, alleging they caused him to lose most of the data from his phone, and he wants to turn the suit into a class action.

The suit in the U.S. District Court for the Northern District of California, in San Jose, is the latest black eye for the Palm Profile cloud-based synchronization service, which debuted with the company’s webOS on the Pre earlier this year. Palm and Sprint last month said “a small number of customers” had had trouble transferring their data from Palm Profiles to new Palm devices and that they were working on a solution.

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