My beef with Chrome is that it frequently prompts me that the file I am downloading might be dangerous for my computer. First off, I use Linux so even if I did download a "harmful file", it still cannot do anything that harmful unless I give it sudo rights...which I won't. But even if I was using Windows, I still think that this message appears too often.
The false positive rate for this feature is something like 50% but should be no larger than 5%. This message is supposed to be a security feature, but an alarm that is always going off is ignored.
I created a bug report for Chromium, the open source browser on which Google Chrome is based, about this issue. Hopefully people will see it, take it seriously, and provide a fix.