Hi FJ,
I have a HTC Desire running Froyo. I tried MPE 1.8.0 yesterday after your post in Esato. I am running the 1.0.2 client. This seemed to sync everything but the calendar OK. The calendar took 3 goes at sync before it worked. However, afterwards the handset synced with google calendar for about half an hour. This surprised me as my sync setting in MPE for the calendar is "Only MyPhoneExplorer". I downloaded the ics file from gcal and it was roughly twice the size of the ics file before I ran MPE. The extra info in the ics file appears to be more lines that say "DESCRIPTION:This is an event reminder", more VALARM: lines and more CATEGORIES: lines.