$SUI experienced three mainnet outages within 48 hours last week, totaling over 18 cumulative hours of downtime. All incidents were tied to bugs in the v1.72 upgrade, including a gas-fee underflow from the new address balances feature and a separate randomness state flaw that froze an epoch. The token dropped 13% to $0.87 as the network halted, wiping roughly $1.88M in derivatives positions, mostly longs. Validators deployed an emergency patch despite knowing it could trigger a second stall, which it did - but the network has since fully recovered without any fund loss or chain revert. The Sui Core Team says future upgrades will improve fault isolation so bugs hit individual transactions instead of the entire chain.