In JOSM, I downloaded area from Carrefour bukit jalil to Bangi exit, just to add exit numbers on the N-S highway. As usual, the itch to correct problems and optimize (simplify ways) got me involved in more than what I bargained. After fixing crossing ways, duplicate, highway to nowhere and stuff, I proceeded to upload the edited data. Says something about removing 2000 nodes etc and 13000 objects... but JOSM just hangs. Perpetual uploading with no end. Aiiyyyah... crap!
Oh well.... long holiday ahead. Happy mapping guys..