* Q4 loss $0.09/shr vs EPS $0.32 year-ago

* Q4 adj EPS $0.19 vs est $0.21

* Q4 rev up 29 pct at $113.6 mln

* Forecasts Q1 in line with expectations

* Shares fall 4 pct in after-hours trading

June 2 (Reuters) - Internet-monitoring equipment maker Blue Coat Systems Inc (BCSI.O: Quote, Profile, Research) posted a fourth-quarter loss, hurt by higher expenses and a provision for income taxes, and it forecast first-quarter results largely in line with market estimates.

For the fourth quarter ended April 30, the company reported a net loss of $3.5 million, or 9 cents a share, compared with a net income of $12.5 million, or 32 cents a share, a year ago.

Excluding items, the company earned 19 cents a share. Revenue jumped 29 percent to $113.6 million.

Total operating expenses rose 35 percent to $80.2 million. The company recorded a provision for income taxes of $4.9 million in the latest quarter, compared with a tax benefit of $3.6 million a year earlier.