Some things are worth waiting for, but a trial isn't necessarily one of them. Accordingly, the Connecticut Appellate Court has overturned the conviction of a man who was forced to drive to court 25 times in three years before his case was heard. Rolf Almgren, 55, a Ridgefield gardener, was charged with disorderly conduct and interfering with an officer after he had an argument with Enfield police who answered a complaint in 1982 that a party he was giving in a hotel was too noisy. Almgren and his lawyer made the 150-mile round trips to court in Manchester, where the trial was scheduled. But each time, after waiting for a few hours, they were told the case would not be heard that day. Travel, subpoenas for witnesses and legal papers cost $18,000, Almgren said. That does not include the cost of the appeal or the time away from his work, he said. When the trial was finally held in April, 1985, Almgren was convicted, fined $400 and given a 30-day suspended sentence. In his appeal, Almgren claimed his right to a speedy trial was infringed. The appellate court this week agreed and ordered the charges and sentence thrown out. The delays were "in the nature of harassment," Judge William C. Bieluch said in the ruling.