Synchronizing whole day events with a Nokia E90

Hi,

I am synchronizing a Nokia E90 (S60v3) with a Mac using iSync and all
the whole day events on my calendar instead of being converted to
"memo"s on the E90 are converted to events from 00:00 to 23:59.

At first I thought it was a problem related to iSync (Apple's sync
tool) but I heard that this happens with Nokia PC Suite and MS
Exchange too.

Is this really the case? Is this a Nokia or an Apple problem?

Many thanks,

Matteo

P.S. If anybody is aware of a third-party agenda running on an E90
that overcomes the problem by displaying these entries from 00:00 to
23:59 as memos so that they do not set my whole agenda as busy?