I apologize if I mistook you, then. I'm not going to sit here and argue over who knows symbian better. I'm sure we both have our areas of expertise. I don't like when they don't work as they are supposed to, either. However, I'm a pretty heavy user of mine and don't experience quite the problems that have been described on the N73.
That being said I don't use Adobe or QuickOffice at all. However, I have two email inboxes setup, I do 1.5k sms/month, and blow through 200-250mb of data on an average month. I sync at least twice a day, watch movies, and misc. other browsing and whatnot. I'm pretty known to use my phone for dang near anything I can think of to use it for.
I've been around Nokias long enough to know that there's several firmware updates before you could call it "stable." Look at the 6230. Regarded by most to be the best all-around phone Nokia's put out in several years, and it launched with firmware what, 3.3 something, and it's up to 5.5 before fully stable?
As per Nokia, these aren't just phones anymore, they're "multimedia computers" and as such, are subject to need updating. How many freakin updates do you install on your windows machine every week? Even macs get updates every now and again.