I've just noticed that my notification light only blinks for almost exactly 5mins. At first I thought it didn't always work because I would come to my phone, not see the light, take it off standby and see I have a message or email. Then I noticed it was working but just went off very quickly. I've heard that task managers/killers can affect the alerts and I am running Astro but using it as a file manager and not a task killer (as I've discovered they're 99% unnecessary). I am also using Handcent for my SMS/MMS messages. Is this normal for you guys? No matter what type of message I get, I only get 5mins worth of blinking.