Shares of technology companies that advertised on Rush Limbaugh's talk show until he insulted a Georgetown University law student last week mainly fell on Monday.

Shares of Carbonite (Nasdaq: CARB), the developer of PC backup systems fell 12 cents to $9.34 during the afternoon program, but recovered to close at $9.15, while shares of software management provider Citrix Systems (Nasdaq: CTXS)  fell $2.87, or nearly 4 percent, to $72.58, during the show before recovering to close at $73.51

Those of AOL (NYSE: AOL) rose 8 cents to $17.75 after the online service bolted the program on Monday.

Other advertisers who withdrew sponsorship from the top-rated program syndicated by Premiere Networks, a unit of closely held Clear Channel, were Allstate, ProFlowers, LegalZoom, Sleep Number, Sleep Train and Tax Resolution Services.

Limbaugh, 61, told his millions of listeners his apology to student Sandra Fluke had been sincere, The Associated Press reported. But he joked that he also got a busy signal when he called his own show Monday.

The talk show host referred to Fluke as a slut and prostitute after she appeared before a congressional committee to advocate federal support for contraception. Limbaugh is married to his fourth wife.

Limbaugh has long boasted of his affection for technology, especially Apple (Nasdaq: AAPL) products. He has often complained that while he exclusively uses Macs, the Cupertino, Calif. company has never advertised on his program.