No, that's not unexpected in laptops. You claim you found dust and more but didn't replace the heat sink compounds while inside. Why not? You were that close to doing the full job.
Help! My lap is on fire!
Asus i5 2430m
Nvidia GeForce 540m
This computer as of late has been on fire! I mean almost literally, yesterday on core temp I registered 101 degrees while playing WoW.
Today I went and bought the Microsoft notebook cooling base but I am still clocking over 90 degrees.
I have pulled the computer apart and cleaned out all dust and debris, the computer is elevated with the cooling fan underneath it.
My GPU temperature is running at expected temps.
Normal usage such as internet browsing, playing video : 60 degrees.
Computer on idle runs in the low 50's.
I don't understand what could be causing this extreme heat. I mean its just WoW...
Picture of the heating programs :