Not quite as worrisome as hantavirus — but still, cruise enthusiasts have another reason to sound the alarm. Carnival Cruise Line announced it would cancel an undisclosed number of reservations after an apparent IT glitch briefly allowed travelers to book cruises at shockingly low fares. A recent IT glitch sent hopeful cruisers swimming for shore after reservations were cancelled. be free – stock.adobe.com According to an email reportedly sent to an undisclosed number of reservations, the company explained that during a routine IT maintenance project, some guests saw a display of prices far below any “reasonable promotional fare,” prompting a booking frenzy before the issue was corrected. “After the site maintenance on Saturday, I was able to book a solo balcony on a 6-day cruise for $300 yesterday. Seems to be fixed now. Did anyone else notice this? Hoping Carnival will honor the price because it was quite literally a steal,” said one hopeful traveler. But the cruise company had other plans.…