As if a turbulent day for stocks wasn’t problem enough for investors, glitches in the websites of many brokerage firms added to the public’s headaches today.

Testy customers took to Twitter to blast their brokerage  firms and mutual fund companies for Web sites that had crashed, leaving them unable to execute trades in a volatile market.

As always, euphemisms abounded. Brokerage firm spokespeople said they had “a slowness issue,” or “a brief period of sporadic Web site inaccessibility,” and the like. But a crash? Not us.

Investors weren’t buying it. “@TDAmeritrade seriously? your servers are crashing today,” wrote one customer. And another: “What a disaster. Time for a new broker.”

You can read my article for TheStreet here.