Internet 'push' technology developer Marimba looks set to file for in IPO on Monday, according to a source close to the company cited in a Wired news report. It is believed Morgan Stanley Dean Witter will underwrite the offering. Hints that the once-feted company was preparing an IPO emerged last month (see earlier story). The reports immediately attracted the attention of investors delirious over the high prices of Internet stocks. Marimba itself continued to keep the low profile it has maintained since it retuned its strategy to promote its Castanet product as an application and information delivery system for corporate networks rather than an Internet broadcasting technology. It was as the latter than the Java-based Castanet had won so many plaudits for Marimba when the software was launched back in 1996. ®