The residents of five Daisy Hill residence halls, Jayhawker Towers and Stouffer Place apartments lost Internet access this week, and Kansas University officials are trying to prevent the computer worm that caused the problem from spreading through the university’s system.

Computer worms are self-replicating programs similar to viruses. Unlike viruses, the computer user need not open an e-mail attachment or run a program for the worm to do harm.

KU officials have met several times seeking solutions, said Allison Lopez, a spokeswoman for KU’s information services.

Some computer labs on campus are open late to accommodate students who have lost their Internet access, and administrators will decide on or before Friday whether to continue those extended hours.

Students can call a hot line at 864-1100 for updated lab hours. Fliers also will be posted in buildings on Daisy Hill.

It’s uncertain when Internet connections to Daisy Hill will be restored, said Todd Cohen, KU spokesman.