My phone stop syncing with PC Suite once I upgraded to latest phone firmware.
I was trolling around some other posts on the periphery of this issue, and one person suggested removing your SDHC card as well as you sim card, reboot the phone and then trying to sync with PC Suite.
I removed the 4 GB SDHC card, reboot, connect to PC and it suddenly worked! All my contacts and calendar synced from Lotus Notes 7.x. I put the SDHC card back in, and it synced again successfully!
Details:
PC Suite 6.68.9
Nokia 5310 Xpressmusic
Firmware v. 5.81
Windows XP SP2
Hope this helps others...
Message Edited by papsinmanila on 19-Jun-2008 07:54 AM