Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Doesn't work with Lotus Notes 5.0

While this product worked flawlessly for months, it suddenly failed for no reason. Reinstalling did not fix the problem. Users with identical Intellisync settings on the same platforms had conflicting results. Upgrading to Pentium 4 system resulted in nearly complete failure to synchronize. As others noted, customer support was worthless. Intellisyn says they will not support custom templates in Lotus Notes, yet, it works on some PC platforms and not others. Easy Sync is a much better option.