Recently, Starknet, a protocol on Ethereum's Layer-2, faced trouble when some blocks got shuffled around, causing transaction delays. This hiccup lasted about four hours on April 4th. Starkscan, a block explorer, showed a gap between two blocks, but Starknet's official status page didn't mention any issues that day.

Later, Starknet revealed that a small error caused the block mix-up. They explained that while block production continued normally, this glitch created a backlog of transactions. This backlog led to some transactions being rejected, and others were reversed because of changing settings.

Starknet isn't the only blockchain facing problems. Solana, another major network, had a big glitch in early February. This glitch stopped block production for over five hours. Since January 2022, Solana has had several major outages and many days with partial or significant disruptions.

Anza, a company focusing on Solana development, explained that the February outage happened because of an error in Solana's Just-in-Time compilation cache. This system compiles programs before running transactions. Austin Federa from the Solana Foundation mentioned that an old command caused an infinite loop, leading to the glitch.

In early April, Solana faced more trouble, with around 75% of transactions failing due to a surge in activity driven by a meme coin craze. Experts think these failed transactions were mainly from bots trying to do quick trading on Solana.

In conclusion, both Starknet and Solana have had their share of hiccups lately. While Starknet had a block mix-up causing transaction delays, Solana faced technical glitches and transaction failures due to a surge in activity. These incidents highlight the challenges blockchain networks can face, even as they strive for efficiency and scalability.