This phone is rapidly becoming immensely popular here at the office. Just like Nokia thought it would, the combination of corporate phone plans and large IDD usage means the carrier is motivated to shower the users with high-end handsets.
I just discovered a few more annoyances.
First, with the WPA2 802.11g wireless network at home, the phone cannot browse. Certain sites don't work (cannot resolve in DNS) while others cannot be contacted at all even when I key in the IP address in the browser. I can, however, without fail, access the Linksys administration web server from the E90. Perhaps my problems are a vagary of Smart Bro DHCP DNS assignment. But our notebooks don't have any problems.
Here in the office with WEP "security," everything works fine. I should just use WEP at home and use MAC address blocking for some level of "security" if I want to use the E90's WLAN capabilities at home.
The GMail Java application has the capability to crash the entire phone.
The inbox is horrendously slow.
This phone is a paradox of speed and slowness. For example the Messaging inbox is quite slow; same for the phone book. But Acrobat Reader is fast! in many ways the phone interface is intolerably slow, compared to say a Palm. But I don't know if there's anything better out there. And in my gut I trust Symbian more than I trust Microsoft.