I am, it's typically positive but as in many places, opinions are not uniform. I view Russians as people positively, as I would with people of any other nation and ethnicity - while at the same time opposing Russia as a nation with considerable imperial power in the region (and yes, that extends through the USSR and Imperial Russia). Russian is after all my first language.
I do think that a lot of inter-ethnic (international?) animosity between that you've touched upon in your post also have had a lot to do with nationalism, there have been hostility between Poles and Russians for centuries in the times of competing empires - and modern nationalism only seems to feed this. Personally, I have not encountered much hostility from other Eastern Europeans in regards to my spoken language and nationality - but living in Australia might have a lot to do with that! In my opinion, nationalism and structural religious power is the great scourge of modern Eastern Europe.
Cool. I didn't know you were from Belarus.
I lived and worked in Russia for several years, and did quite a bit of travel around the region. It was mostly to Eastern Europe, the Caucuses and Baltics, but I made it to Minsk once for a conference.
While you would obviously know better, my experience and impressions are much like yours. There's quite a bit of dislike for Russia, and Russians, in many of the FSU and satellite countries, particularly places like Georgia (though interestingly, I've found Belarusians to be among the more favourable to Russians). Of course, much of the antagonism is well deserved; Russia has been a bad actor on the world stage on and off for almost a century.
And in my experience the antagonism is not just towards the Russian government, it's towards Russians in general. But it's more group focused antagonism, as most of my friends and colleagues from those countries are friendly with individual Russians on a personal level. And here in the UK, the expat slavic communities tend to mix quite a bit. Especially the women, who I think are generally more sensible about rejecting nationality based bigotry.
I still go back to Russia a couple times a year, and sadly the anti-American/nationalist sentiment there is almost at an all time high. It's not quite where it was a few years ago at its peak (many Russians hated Obama, but I have admit that a lot of that was racism), but still pretty bad. Russians are very aware that their country is a daily topic in the US. A lot of this comes from the top, Putin has presented the west as the enemy, much like the despots in the Middle East have done for decades. Whatever we think of Russians, they're fairly convinced we hate them.
But on a personal level, from my standpoint Russians are as warm and friendly as ever, and I have a lot of respect for them and their culture.