(b) before payment of the costs, the plaintiff commences further proceedings against that other party on the same or substantially the same cause of action as that on which the former proceedings were commenced.
11 In my view it cannot be said that the instant proceedings involve the same or substantially the same causes of action as the earlier proceedings.
12 Whilst I accept that there is a power to order a stay of one set of proceedings in a situation where the payment of costs in earlier proceedings is outstanding, that power is no more than a discretionary power rather than a strict rule: X Limited v Morgan-Grampian (Publishers) Ltd [1991] 1 AC 1; KP Cable Investments Pty Ltd v Meltglow Pty Ltd (1995) 56 FCR 189 at 206; Truth About Motorways Pty Ltd v Macquarie Infrastructure Investment Management Ltd [unreported, Federal Court of Australia, Foster J, 1 July 1998] at 3; Woollahra Municipal Council v Shahani (1990) 69 LGRA 435 at 439-440; In the Marriage of MKA and SH Fahmi (1995) 19 Fam LR 517 at 524; cf Leaway Pty Ltd v Newcastle City Council (No 2) [2005] NSWSC 826.
13 The unusual circumstances in terms of the nature of the two separate sets of proceedings and the fact that the causes of action were plainly disparate, mean that there is no substance in the proposition that the present proceedings should be stayed in the absence of Mr Green having failed to pay the costs of the earlier proceedings at first instance or on appeal.
14 There has been no suggestion that either set of proceedings were vexatious.
Security for costs
15 The defendants also seek an order for security for costs and if this were to be paid then the defendants would have established an alternative basis for a stay order pending compliance with any such order.
16 Mr Green is plainly in substance the moving party. Although he is resident in Queensland the defendants have not suggested that in so far as his position as personal plaintiff is concerned, the instant circumstances engage Part 42 rule 21(a) of the Uniform Civil Procedure Rules [since of course there would be no difficulty in enforcing a judgment against Mr Green]. Courts will not order security for costs against a plaintiff who, although ordinarily resident out of the jurisdiction, is not shown to have real or personal assets of sufficient value within the jurisdiction to satisfy any order as to costs.
17 In Energy Drilling Inc v Petroz NL (1989) ATPR 40-954 Gummow J said at 50,422: