Furry - we haven't tried that - way too busy. However, when my wife brings the same MacBook Pro with her on business trips, there is no problem sending emails with attachments. Only here in the apartment.
For the past year, I couldn't figure it out. Then, starting two weeks ago, I had difficulty sending emails with attachments from my wired PC (Win XP). Got error messages that the server had timed out (or similar). So problems with outgoing emails+attachments on two PCs with two different OSes, two different email apps and six different email accounts. At that point, I suspected Verizon, possibly its modem-router. (In my experience, all DSL modem-routers go bad. They burn out like light bulbs.) After the usual four hours wasting time with VZ help line, I was finally transferred to their executive escalation team. We discussed and I repeated various test efforts. (Among other things, I ALSO couldn't send an email with attachments via webmail.verizon.net on a browser.) When I suggested there was too much intermittency on our uploads, they agreed, they did a "port change" at the CO, and now my wife and I can both send emails with attachments.
Even so, she complains it's slow. So I thought I'd try to get her a better WiFi signal in the other room. Not yet. But your advice certainly helped me understand both D-Link units.
Question: I tested the DAP-1522 last night by connecting my Blackberry to its signal. That's helpful because my Blackberry shows signal strength in bars and also reports in -dbm. When the Blackberry was linking with the DAP-1522, it was no longer listed in the Actiontec. So the Actiontec "sees" only the DAP-1522 and not any devices connecting to the DAP-1522 although they work. I think that means that internal LAN networking gets more difficult. If my wife's MacBook Pro links WiFi to the DAP-1522, will she still be able to print to our printer, which is linked WiFi to the Actiontec? (And vice versa?)
Thanks.